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Quantum computing

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18.07.2019
19:11 FT.com ScienceQuantum computing builds on Turing’s legacy

Scientists are mining mathematics for ‘hard problems’ from which to concoct new algorithms

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17.07.2019
20:19 Nature.ComA two-qubit gate between phosphorus donor electrons in silicon

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20:11 Phys.orgTwo-qubit gate: the speediest quantum operation yet

A group of scientists led by 2018 Australian of the Year Professor Michelle Simmons have achieved the first two-qubit gate between atom qubits in silicon—a major milestone on the team's quest to build an atom-scale quantum computer. The pivotal piece of research was published today in world-renowned journal Nature.

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13:55 Technology.orgLimitation exposed in promising quantum computing material

Quantum computers promise to perform operations of great importance believed to be impossible for our technology today. Current

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16.07.2019
20:47 ScienceDaily.comLimitation exposed in promising quantum computing material

Physicists have theorized that a new type of material, called a three-dimensional (3-D) topological insulator (TI), could be a candidate to create qubits for quantum computing due to its special properties. A study found that when the TI's insulating layers are as thin as 16 quintuple atomic layers across, the top and bottom metallic surfaces begin to destroy their metallic properties.

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20:28 Phys.orgLimitation exposed in promising quantum computing material

Quantum computers promise to perform operations of great importance believed to be impossible for our technology today. Current computers process information via transistors carrying one of two units of information, either a 1 or a 0. Quantum computing is based on the quantum mechanical behavior of the logic unit. Each quantum unit, or "qubit," can exist in a quantum superposition rather than taking discrete values. The biggest hurdles to quantum computing are the qubits themselves—it is an ongoing scientific challenge to create logic units robust enough to carry instructions without being impacted by the surrounding environment and resulting errors.

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15.07.2019
20:15 Phys.orgHow the quest for a scalable quantum computer is helping fight cancer

Today, someone with breast cancer may undergo several rounds of chemotherapy and spend months in limbo before medical scans can show if that particular cocktail of toxic drugs is shrinking the tumor.

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13.07.2019
01:11 Photonics.comNew Theory Aims to Advance Quantum Computing

A protocol for storing and releasing a single photon in an embedded eigenstate — a quantum state that is virtually unaffected by loss and decoherence — could advance the development of quantum computers. Created by researchers at City University of New York (CUNY), the protocol could facilitate a new approach to capturing and preserving photons. The team’s calculations suggest that it is possible for a pair of photons to impinge on a cavity-atom coupled system, and that atomic nonlinearity would allow one photon to be perfectly trapped and preserved in the system while the other is reemitted. The researchers theoretically explored the excitation and release of single-photon embedded eigenstates based on atomic...

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12.07.2019
11:25 TechnologyReview.comExplainer: What is post-quantum cryptography?

The race is on to create new ways to protect data and communications from the threat posed by super-powerful quantum computers.

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11.07.2019
20:17 ScienceDaily.comThe best of both worlds: How to solve real problems on modern quantum computers

Researchers have developed hybrid algorithms to run on size-limited quantum machines and have demonstrated them for practical applications.

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16:35 Phys.orgCoupling qubits to sound in a multimode cavity

In a recent study, researchers at the University of Colorado have resolved phonon Fock states in the spectrum of a superconducting qubit coupled to a multimode acoustic cavity. Fock states (or number states) are quantum states with a clearly defined number of particles. These states play a crucial part in the second quantization formulation of quantum mechanics.

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10.07.2019
16:17 Phys.orgA virtual substrate opens path to oxide films on silicon for application in 5G, MEMS, sensors and quantum computation

Proof that a new ability to grow thin films of an important class of materials called complex oxides will, for the first time, make these materials commercially feasible, according to Penn State materials scientists.

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00:58 ScienceDaily.comQuantum chemistry on quantum computers

A new quantum algorithm has been implemented for identifying important physical quantities such as spin quantum numbers relevant to convoluted electronic wave functions on quantum computers, serving as tracking complex chemical reactions without exponential/combinatorial explosion, giving exact solutions of Schroedinger Equations for chemistry, for the first time.

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09.07.2019
23:28 ScienceDaily.com'Connecting the dots' for quantum networks

Researchers have developed a novel technique that could enable new technologies that use properties of quantum physics for computing, communication and sensing, which may lead to 'neuromorphic' or brain-inspired computing.

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19:47 Phys.org'Connecting the dots' for quantum networks

Researchers at the U.S. Naval Research Laboratory (NRL) developed a new technique that could enable future advancements in quantum technology.

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01:01 Nanowerk.comConnecting the dots for quantum networks

A new technique squeezes quantum dots to emit single photons with precisely the same color and with positions that can be less than a millionth of a meter apart.

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05.07.2019
17:12 CosmosMagazine.comQuantum computing for the qubit curious

Quantum computers could change the world. It's a shame they’re so bewildering. Cathal O'Connell prepared this brief primer.

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04.07.2019
12:13 Technology.orgNew material shows high potential for quantum computing

A joint team of scientists at the University of California, Riverside, and the Massachusetts Institute of Technology is

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03.07.2019
11:36 Technology.orgPhysicists use light waves to accelerate supercurrents, enable ultrafast quantum computing

Jigang Wang patiently explained his latest discovery in quantum control that could lead to superfast computing based on

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01.07.2019
23:06 Phys.orgPhysicists use light waves to accelerate supercurrents, enable ultrafast quantum computing

Jigang Wang patiently explained his latest discovery in quantum control that could lead to superfast computing based on quantum mechanics: He mentioned light-induced superconductivity without energy gap. He brought up forbidden supercurrent quantum beats. And he mentioned terahertz-speed symmetry breaking.

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23:02 ScienceDaily.comPhysicists use light waves to accelerate supercurrents, enable ultrafast quantum computing

Scientists have discovered that terahertz light -- light at trillions of cycles per second -- can act as a control knob to accelerate supercurrents. That can help open up the quantum world of matter and energy at atomic and subatomic scales to practical applications such as ultrafast computing.

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30.06.2019
16:09 ScientificAmerican.ComQuantum Computing for English Majors

The poet who discovered Shor’s algorithm answers questions about quantum computers and other mysteries -- Read more on ScientificAmerican.com

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29.06.2019
05:10 ScienceDaily.comNew material shows high potential for quantum computing

Scientists are getting closer to confirming the existence of an exotic quantum particle called Majorana fermion, crucial for fault-tolerant quantum computing -- the kind of quantum computing that addresses errors during its operation.

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01:20 Nanowerk.comNew material shows high potential for quantum computing

Researchers are getting closer to confirming the existence of an exotic quantum particle called Majorana fermion, crucial for fault-tolerant quantum computing - the kind of quantum computing that addresses errors during its operation.

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28.06.2019
23:56 Photonics.comPrototype Could Be Used to Connect Quantum Computers

Physicists from the Institute of Science and Technology Austria (IST Austria) used a mechanical oscillator to produce entangled radiation. According to the research team, this is the first time a mechanical object has been used to create entangled radiation. Beyond its significance for fundamental physics, such a device could someday be used to link sensitive quantum computers with the optical fibers that connect computer networks. Classical computers are typically connected through optical fibers, because optical radiation is robust against disturbances that could corrupt or destroy data. In order to apply this technology to quantum computers, a link that can convert the quantum computer’s microwave photons to optical...

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23:07 Phys.orgNew material shows high potential for quantum computing

A joint team of scientists at the University of California, Riverside, and the Massachusetts Institute of Technology is getting closer to confirming the existence of an exotic quantum particle called Majorana fermion, crucial for fault-tolerant quantum computing—the kind of quantum computing that addresses errors during its operation.

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16:38 Phys.orgOptimal quantum computation linked to gravity

Information and gravity may seem like completely different things, but one thing they have in common is that they can both be described in the framework of geometry. Building on this connection, a new paper suggests that the rules for optimal quantum computation are set by gravity.

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26.06.2019
15:31 Phys.orgResearchers explore architectural design of quantum computers

A recent study led by Princeton University researchers, in collaboration with University of Maryland and IBM, explored the architectural design of quantum computers (QC). In a paper presented at the 2019 ACM/IEEE International Symposium on Computer Architecture, the researchers performed the largest real-system evaluation of quantum computers to date, using seven quantum computers from IBM, Rigetti and the University of Maryland.

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25.06.2019
19:19 Physics.Aps.orgSynopsis: Making Quantum Cryptography Safe and Practical

A theoretical study suggests that “continuous variable” quantum key distribution—an approach to quantum cryptography compatible with telecom networks—could be made absolutely secure against hacking.
[Physics] Published Tue Jun 25, 2019

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17:57 ScienceDaily.comA further step towards reliable quantum computation

A team of physicists introduces a novel technique to detect entanglement even in large-scale quantum systems with unprecedented efficiency. This brings scientists one step closer to the implementation of reliable quantum computation. The new results are of direct relevance for future generations of quantum devices.

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17:09 CosmosMagazine.comThanks to AI, we know we can teleport qubits in the real world

Deep learning shows its worth in the word of quantum computing. Gabriella Bernardi reports.

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01:33 ScienceDaily.comA new theory for trapping light particles aims to advance development of quantum computers

Researchers have developed a new protocol for ensuring the stability of data when photons are stored for extended periods of time. The theory could advance development of quantum computers.

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24.06.2019
23:29 Phys.orgNew theory for trapping light particles aims to advance development of quantum computers

Quantum computers, which use light particles (photons) instead of electrons to transmit and process data, hold the promise of a new era of research in which the time needed to realize lifesaving drugs and new technologies will be significantly shortened. Photons are promising candidates for quantum computation because they can propagate across long distances without losing information, but when they are stored in matter they become fragile and susceptible to decoherence. Now researchers with the Photonics Initiative at the Advanced Science Research Center (ASRC) at The Graduate Center, CUNY have developed a new protocol for storing and releasing a single photon in an embedded eigenstate—a quantum state that is virtually unaffected by loss and decoherence. The novel protocol, detailed in the current issue of Optica, aims to advance the development of quantum computers.

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21.06.2019
15:36 Phys.orgResearchers make steps toward debugging tools for quantum computers

In classical computing, debugging programs is one of the most time-consuming tasks in software development. Successful debugging relies on software development tools and also on the experience of the programmer. In quantum computing, researchers predict debugging will be an even greater challenge. In a paper soon to appear at the ACM/IEEE 46th Annual International Symposium for Computer Architecture (as part of ACM's 2019 Federated Computing Research Conferences), researchers at Princeton University present debugging tools based on statistical tests, with a goal of aiding programmers in building correct quantum programs for near-term quantum computers.

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14:12 Phys.orgResearchers demonstrate new path to reliable quantum computation

Researchers at the University of Chicago published a novel technique for improving the reliability of quantum computers by accessing higher energy levels than traditionally considered. Most prior work in quantum computation deals with "qubits," the quantum analogue of binary bits that encode either zero or one. The new work instead leverages "qutrits," quantum analogues of three-level trits capable of representing zero, one or two.

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13:48 LiveScience.comForget Moore's Law — Quantum Computers Are Improving According to a Spooky 'Doubly Exponential Rate'

They're getting really good, really, really fast.

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19.06.2019
18:03 Phys.orgA sound idea: A step towards quantum computing

A team at the University of Tsukuba studied a novel process for creating coherent lattice waves inside silicon crystals using ultrashort laser pulses. Using theoretical calculations combined with experimental results that were obtained at the University of Pittsburgh, they were able to show that coherent vibrational signals could be maintained inside the samples. This research may lead to quantum computers based on existing silicon devices that can rapidly perform tasks out of the reach of even the fastest supercomputers now available.

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17:42 QuantaMagazine.orgHow to Turn a Quantum Computer Into the Ultimate Randomness Generator

Pure, verifiable randomness is hard to come by. Two proposals show how to make quantum computers into randomness factories.

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17:09 ScienceDaily.comA sound idea: a step towards quantum computing

Researchers have developed a new method for using lasers to create tiny lattice waves inside silicon crystals that can encode quantum information. By taking advantage of existing silicon hardware, this work may greatly reduce the cost of future quantum computers for cryptographic and optimization applications.

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18.06.2019
17:52 QuantaMagazine.orgA New Law to Describe Quantum Computing’s Rise?

Neven’s law states that quantum computers are improving at a “doubly exponential” rate. If it holds, quantum supremacy is around the corner.

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13.06.2019
22:50 ScienceDaily.comMysterious Majorana quasiparticle is now closer to being controlled for quantum computing

Using a new approach, researchers detected the elusive Majorana quasiparticle, notable for being its own antiparticle and for its potential as the basis for a robust quantum computing system, in a device built from a superconductor, small magnetic elements, and a topological insulator.

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21:09 Phys.orgMysterious Majorana quasiparticle is now closer to being controlled for quantum computing

As mysterious as the Italian scientist for which it is named, the Majorana particle is one of the most compelling quests in physics.

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10.06.2019
14:12 ScientificAmerican.ComThe Problem with Quantum Computers

It’s called decoherence—but while a breakthrough solution seems years away, there are ways of getting around it -- Read more on ScientificAmerican.com

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11:39 ChemistryWorld.comIndustry adopts quantum computing, qubit by qubit

Companies looking to solve complex chemistry problems are among early adopters of quantum technology

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08.06.2019
15:45 Technology.orgQuantum Computing and the Future

Earlier this year, IBM released its first quantum computer designed for commercial use. This machine is not intended

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04.06.2019
18:13 Futurity.orgNanoscale ‘donuts’ offer boost to quantum computing

By patterning nanoscale donuts into a 2D crystal, researchers have achieved a new level of control over its electrical and optical properties.

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31.05.2019
00:38 Photonics.comThin Films Could Support Single-Photon Emission for Quantum Computing

Efforts to create reliable light-based quantum computing and quantum key distribution for cybersecurity could benefit from a Los Alamos National Laboratory study that demonstrates a new method for creating thin films to control single-photon emission. The approach exploits strain at highly spatially localized and spectrally well-separated defect emission sites, or tips, in the 750- to 800-nm regime in a tungsten/selenium film. The team synthesized the film through chemical vapor deposition using a multistep, diffusion-mediated gas source. An innovative method for controlling single-photon emission for specific locations in 2D materials could offer a path toward all-optical quantum computers and other quantum technologies. This image shows a false-color scanning electron micrograph of the array used to create and place single-photon sources in epitaxial tungsten diselenide. Inset

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30.05.2019
21:42 TechnologyReview.comHow a quantum computer could break 2048-bit RSA encryption in 8 hours

A new study shows that quantum technology will catch up with today’s encryption standards much sooner than expected. That should worry anybody who needs to store data securely for 25 years or so.

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29.05.2019
21:33 ScienceDaily.comSecure metropolitan quantum networks move a step closer

Successful new field tests of a continuous-variable quantum key distribution (CV-QKD) system over commercial fiber networks could pave the way to its use in metropolitan areas. That is the key achievement from a team of scientists, which demonstrates CV-QKD transmission over commercial deployed fiber link with a distance of 50 kilometers.

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19:46 ScienceDaily.comSecure metropolitan quantum networks move a step closer

Successful new field tests of a continuous-variable quantum key distribution (CV-QKD) system over commercial fiber networks could pave the way to its use in metropolitan areas.

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19:12 Phys.orgSecure metropolitan quantum networks move a step closer

Successful new field tests of a continuous-variable quantum key distribution (CV-QKD) system over commercial fiber networks could pave the way to its use in metropolitan areas.

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27.05.2019
11:17 Technology.orgQuantum computing boost from vapour stabilising technique

A technique to stabilise alkali metal vapour density using gold nanoparticles, so electrons can be accessed for applications

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24.05.2019
16:22 ScienceDaily.comQuantum computing boost from vapor stabilizing technique

A technique to stabilize alkali metal vapor density using gold nanoparticles, so electrons can be accessed for applications including quantum computing, atom cooling and precision measurements, has now been patented.

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12:08 Phys.orgQuantum computing boost from vapour stabilising technique

A technique to stabilise alkali metal vapour density using gold nanoparticles, so electrons can be accessed for applications including quantum computing, atom cooling and precision measurements, has been patented by scientists at the University of Bath.

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21.05.2019
13:41 Yahoo ScienceAmazon Prime Boss Named CEO of Google-Backed Quantum Computing Startup

Amazon Prime Boss Named CEO of Google-Backed Quantum Computing Startup

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15.05.2019
01:01 ScienceDaily.comGenerating high-quality single photons for quantum computing

Researchers have designed a way to generate, at room temperature, more single photons for carrying quantum information. The design, they say, holds promise for the development of practical quantum computers.

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14.05.2019
22:18 Technology.orgGenerating high-quality single photons for quantum computing

MIT researchers have designed a way to generate, at room temperature, more single photons for carrying quantum information.

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15:08 Phys.orgGenerating high-quality single photons for quantum computing

MIT researchers have designed a way to generate, at room temperature, more single photons for carrying quantum information. The design, they say, holds promise for the development of practical quantum computers.

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13.05.2019
23:38 ScienceDaily.comQuantum world-first: Researchers reveal accuracy of two-qubit calculations in silicon

Engineers have measured the accuracy of silicon two-qubit operations for the first time -- and their results confirm the promise of silicon for quantum computing.

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18:24 Nature.ComFidelity benchmarks for two-qubit gates in silicon

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18:04 Phys.orgQuantum world-first—researchers reveal accuracy of two-qubit calculations in silicon

For the first time ever, researchers have measured the fidelity—that is, the accuracy—of two-qubit logic operations in silicon, with highly promising results that will enable scaling up to a full-scale quantum processor.

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09.05.2019
14:00 TechnologyReview.comThe new benchmark quantum computers must beat to achieve quantum supremacy

Physicists are confident that a quantum computer will soon outperform the world’s most powerful supercomputer. To prove it, they have developed a test that will pit one against the other.

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08.05.2019
16:38 Phys.orgResearchers violate Bell's inequality with remotely connected superconducting qubits

The efficient generation of entanglement between remote quantum nodes is a crucial step in securing quantum communications. In past research, entanglement has often been achieved using a number of different probabilistic schemes.

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07.05.2019
22:59 Photonics.comGraphene-Based Logic Gate Could Support Photonic Quantum Computing

Physicists from the University of Vienna and the Institute of Photonic Sciences have shown that graphene structures can be tailored to enable single photons to interact with one another. Their findings have led them to propose a new potential architecture for a two-photon logic gate for quantum computing. Logic gates — the devices that allow one photon to change the state of a second photon — will be needed in large numbers to build a photonic quantum computer. One way to achieve this is to build gates using a nonlinear material in which two photons can interact. However, standard nonlinear materials are too inefficient to be used for this purpose. Schematic of a graphene-based two-photon gate. Courtesy of University of Vienna/Thomas Rögelsperger. A team led by professor Philip Walther proposes to use graphene to create a quantum logic gate. The team further proposes to enhance

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16:28 Optics and Photonics NewsQuantum Computing: Will It Work, and When?

A CLEO workshop explored the long road ahead in the quest for universal, fault-tolerant quantum computers—and what they might be good for if and when they come about.

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13:50 Phys.orgQuantum computing with graphene plasmons

A novel material that consists of a single sheet of carbon atoms could lead to new designs for optical quantum computers. Physicists from the University of Vienna and the Institute of Photonic Sciences in Barcelona have shown that tailored graphene structures enable single photons to interact with each other. The proposed new architecture for quantum computer is published in the recent issue of npj Quantum Information.

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06.05.2019
19:56 ScienceDaily.comQuantum computing with graphene plasmons

A novel material that consists of a single sheet of carbon atoms could lead to new designs for optical quantum computers. Physicists have shown that tailored graphene structures enable single photons to interact with each other.

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19:49 Technology.orgResearchers take a bottom-up approach to synthesizing microscopic diamonds for bioimaging, quantum computing

Scientists are excited about diamonds — not the types that adorn jewelry, but the microscopic variety that are

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17:09 Phys.orgNew holographic technique opens the way for quantum computation

Photography measures how much light of different color hits the photographic film. However, light is also a wave, and is therefore characterized by the phase. Phase specifies the position of a point within the wave cycle and correlates to depth of information, meaning that recording the phase of light scattered by an object can retrieve its full 3-D shape, which cannot be obtained with a simple photograph. This is the basis of optical holography, popularized by fancy holograms in sci-fi movies like Star Wars.

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15:55 Nanowerk.comQuantum computing with graphene plasmons

In their proposed graphene quantum logic gate, scientists show that if single plasmons are created in nanoribbons made out of graphene, two plasmons in different nanoribbons can interact through their electric fields.

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15:50 ScienceDaily.comNew holographic technique opens the way for quantum computation

Physicists have developed a method based on the principles of holograms to capture 3D images of objects beyond the reach of light.

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11:49 Technology.orgResearchers take a bottom-up approach to synthesizing microscopic diamonds for bioimaging, quantum computing

Scientists are excited about diamonds — not the types that adorn jewelry, but the microscopic variety that are

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03.05.2019
22:39 Nanowerk.comResearchers take a bottom-up approach to synthesizing nanodiamonds for bioimaging, quantum computing

Researchers used extremely high pressure and temperature to dope nanodiamonds. They used this approach to dope nanodiamonds with silicon, causing the diamonds to glow a deep red - a property that would make them useful for cell and tissue imaging.

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21:04 Phys.orgBottom-up approach can synthesize microscopic diamonds for bioimaging, quantum computing

Scientists are excited about diamonds—not the types that adorn jewelry, but the microscopic variety that are less than the width of a human hair. These so-called "nanodiamonds" are made up almost entirely of carbon. But by introducing other elements into the nanodiamond's crystal lattice—a method known as "doping"—researchers could produce traits useful in medical research, computation and beyond.

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02.05.2019
15:08 Phys.orgPhonon-mediated quantum state transfer and remote qubit entanglement

Quantum information platforms are based on qubits that talk to each other and photons (optical and microwave) are the carrier of choice—to date, to transfer quantum states between qubits. However, in some solid-state systems, acoustic vibrational properties of the material themselves known as phonons can be advantageous. In a recent study published on Science Advances, B. Bienfait and colleagues at the interdisciplinary departments of Molecular Engineering, Physics and Materials Science in the U.S. described the deterministic emission and capture of travelling (itinerant) phonons through an acoustic communication channel, to allow phonon-based coherent transfer of quantum states.

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29.04.2019
17:22 Photonics.comNanomechanical Router Could Open Way for Scalable Quantum Networks

University of Copenhagen researchers have developed a nanocomponent that emits photons carrying quantum information. The component, called a nanomechanical router, emits quantum information carried by photons and routes the photons in different directions inside a photonic chip. The microscopic-size component could provide a way to scale up quantum technology. The router is based on two coupled waveguides whose distance is adjusted on demand by an external voltage. The researchers showed controllable two-port routing of single photons emitted from quantum dots embedded in the same chip. They observed a maximum splitting ratio >23  decibels (dB), a low insertion loss of 0.67 dB, and a response time below 1 microsecond (μs). A new component, called a nanomechanical router, emits quantum information carried by photons and routes the photons into different directions inside a

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02:19 Futurity.orgDevice offers cool new way to work with qubits

A new device for controlling and measuring qubits inside a cooler environment could let quantum computers tackle more complex problems.

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25.04.2019
18:24 Photonics.comInnovations in Quantum Computing, Brain Imaging Among Highlights of CLEO 2019

Scalable quantum computing. Multiphoton microscopy for noninvasive brain imaging. The latest chapter on laser-matter interactions. These subjects and more are among the highlights of CLEO 2019, which is set to convene May 5-10 at the San Jose McEnery Convention Center. CLEO highlights the latest applications, market-ready technologies, and cutting-edge research in all areas of lasers and photonics with six days of technical sessions, tutorials, exhibits, special symposia, short courses, plenary sessions, and other special events. San Jose McEnery Convention Center. Courtesy of San Jose Convention & Visitors Bureau. Plenary speakers will include Chris Xu, professor of applied and engineering physics at Cornell University, founding co-director of Cornell Neurotech, and director of Cornell NeuroNex Hub, an NSF funded center for developing and disseminating neurotechnology. Xu’s

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24.04.2019
17:40 QuantaMagazine.orgA New Approach to Multiplication Opens the Door to Better Quantum Computers

Quantum computers can’t selectively forget information. A new algorithm for multiplication shows a way around that problem.

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19.04.2019
16:35 LiveScience.comThis Quantum Computer Can See the Future — All 16 of Them

This quantum computer can see many futures at once.

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17.04.2019
19:01 ScienceDaily.comWorld-record quantum computing

A world-record result in reducing errors in semiconductor electron 'spin qubits', a type of building block for quantum computers, has been achieved.

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17:42 Phys.orgImproving quantum computers

For decades, experts have predicted that quantum computers will someday perform difficult tasks, such as simulating complex chemical systems, that can't be done by conventional computers. But so far, these machines haven't lived up to their potential because of error-prone hardware. That's why scientists are working to improve the qubit—the basic hardware element of quantum computers, according to an article in Chemical & Engineering News (C&EN), the weekly newsmagazine of the American Chemical Society.

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16:43 Phys.orgWorld-record quantum computing result for Sydney teams

A world-record result in reducing errors in semiconductor 'spin qubits', a type of building block for quantum computers, has been achieved using the theoretical work of quantum physicists at the University of Sydney Nano Institute and School of Physics.

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16:31 Phys.orgResearchers use noise data to increase reliability of quantum computers

A new technique by researchers at Princeton University, University of Chicago and IBM significantly improves the reliability of quantum computers by harnessing data about the noisiness of operations on real hardware. In a paper presented this week, researchers describe a novel compilation method that boosts the ability of resource-constrained and "noisy" quantum computers to produce useful answers. Notably, the researchers demonstrated a nearly three times average improvement in reliability for real-system runs on IBM's 16-qubit quantum computer, improving some program executions by as much as eighteen-fold.

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12.04.2019
10:09 Phys.orgResearch provides speed boost to quantum computers

A new finding by researchers at the University of Chicago promises to improve the speed and reliability of current and next generation quantum computers by as much as ten times. By combining principles from physics and computer science, the researchers developed a new scalable compiler that makes software aware of the underlying quantum hardware, offering significant performance benefits as scientists race to build the first practical quantum computers.

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11.04.2019
19:44 ScienceDaily.comNew algorithm optimizes quantum computing problem-solving

Researchers have developed an algorithm that enhances the ability of a quantum computer to more efficiently find the best solution for complicated problems.

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10.04.2019
16:28 Phys.orgNew algorithm optimizes quantum computing problem-solving

Tohoku University researchers have developed an algorithm that enhances the ability of a Canadian-designed quantum computer to more efficiently find the best solution for complicated problems, according to a study published in the journal Scientific Reports.

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08.04.2019
16:50 Phys.orgResearch team expands quantum network with successful long-distance entanglement experiment

Scientists from the U.S. Department of Energy's Brookhaven National Laboratory, Stony Brook University, and DOE's Energy Sciences Network (ESnet) are collaborating on an experiment that puts U.S. quantum networking research on the international map. Researchers have built a quantum network testbed that connects several buildings on the Brookhaven Lab campus using unique portable quantum entanglement sources and an existing DOE ESnet communications fiber network—a significant step in building a large-scale quantum network that can transmit information over long distances.

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27.03.2019
02:44 Futurity.orgHere’s a better way to measure atomic qubits

A more accurate way to measure qubits, the basic unit of information in quantum computers, could be a big step forward.

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26.03.2019
17:26 Phys.orgIn the future, everyone might use quantum computers

Computers were once considered high-end technology, only accessible to scientists and trained professionals. But there was a seismic shift in the history of computing during the second half of the 1970s. It wasn't just that machines became much smaller and more powerful—though, of course, they did. It was the shift in who would use computers and where: They became available to everyone to use in their own home.

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00:32 Nanowerk.comExtremely accurate measurements of atom states for quantum computing

A new method allows the quantum state of atomic qubits to be measured with twenty times less error than was previously possible, without losing any atoms.

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25.03.2019
23:18 ScienceDaily.comExtremely accurate measurements of atom states for quantum computing

A new method allows the quantum state of atomic 'qubits'--the basic unit of information in quantum computers -- to be measured with twenty times less error than was previously possible, without losing any atoms.

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20:17 Phys.orgExtremely accurate measurements of atom states for quantum computing

A new method allows the quantum state of atomic "qubits"—the basic unit of information in quantum computers—to be measured with twenty times less error than was previously possible, without losing any atoms. Accurately measuring qubit states, which are analogous to the one or zero states of bits in traditional computing, is a vital step in the development of quantum computers. A paper describing the method by researchers at Penn State appears March 25, 2019 in the journal Nature Physics.

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21.03.2019
22:52 Photonics.comQuantum Dots Create Distance Between Electron Spins for Quantum Computing

Scientists at the Niels Bohr Institute have realized the swap of electron spins between distant quantum dots. This is significant for future quantum communications because it will allow the distance between the quantum dots to be large enough for integration with traditional microelectronics and, perhaps, a future quantum computer. The Copenhagen team collaborated with researchers at Purdue University and the University of Sydney to make the discovery. One method of storing and exchanging quantum information is through electron spin states, where the electrons’ charge and spin is manipulated by gate-voltage pulses. It was believed that this method can only work if quantum dots touch each other. If the dots are squeezed too close together, the spins will react too violently; if placed too far apart, the spins will interact too slowly. Both fast spin exchange and enough room

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20.03.2019
12:46 Technology.orgScientists used quantum computing to improve radars by a factor of 10

Radars are very important to our civilization. Military uses them as well as air traffic control system and

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19.03.2019
18:29 ScienceDaily.comComputer program developed to find 'leakage' in quantum computers

A new computer program that spots when information in a quantum computer is escaping to unwanted states will give users of this promising technology the ability to check its reliability without any technical knowledge for the first time.

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17:01 Phys.orgComputer program developed to find 'leakage' in quantum computers

A new computer program that spots when information in a quantum computer is escaping to unwanted states will give users of this promising technology the ability to check its reliability without any technical knowledge for the first time.

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18.03.2019
18:32 Yahoo SciencePhysicists Reverse Time for Tiny Particles Inside a Quantum Computer

Time goes in one direction: forward. Little boys become old men but not vice versa; teacups shatter but never spontaneously reassemble. This cruel and immutable property of the universe, called the "arrow of time," is fundamentally a consequence of the second law of thermodynamics, which dictates that systems will always tend to become more disordered over time. But recently, researchers from the U.S. and Russia have bent that arrow just a bit -- at least for subatomic particles.In the new study, published Tuesday (Mar. 12) in the journal Scientific Reports, researchers manipulated the arrow of time using a very tiny quantum computer made of two quantum particles, known as qubits, that performed calculations. [Twisted Physics: 7 Mind-Blowing Findings]At the subatomic scale, where the odd rules of quantum mechanics

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14:10 Space.comPhysicists Reverse Time for Tiny Particles Inside a Quantum Computer

The "arrow of time" went backward inside this tiny quantum computer.

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17.03.2019
17:08 SingularityHub.ComFinally, Proof That Quantum Computing Can Boost Machine Learning

Quantum supremacy sounds like something out of a Marvel movie. But for scientists working at the forefront of quantum computing, the hope—and hype—of this fundamentally different method of processing information is very real. Thanks to the quirky properties of quantum mechanics (here’s a nifty primer), quantum computers have the potential to massively speed up certain […]

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