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Quantum computing

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21.01.2022
18:25 SingularityHub.Com Silicon Quantum Computing Achieves 99 Percent Accuracy for the First Time

Quantum computers made from the same raw materials as standard computer chips hold obvious promise, but so far they’ve struggled with high error rates. That seems set to change after new research showed silicon qubits are now accurate enough to run a popular error-correcting code. The quantum computers that garner all the headlines today tend […]

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18:06 Technology.org Researchers will use the world’s most accurate radiation detector in quantum computers

In September 2020, researchers at Aalto University and VTT revealed that they had developed a high-speed nano-scale radiation

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00:19 Nanowerk.com Towards compact quantum computers, thanks to topology

Researchers have compared the electron distribution below the oxide layer of two semiconductors. The investigation is part of an effort to develop particularly stable quantum bits - and thus, in turn, particularly efficient quantum computers.

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20.01.2022
23:07 ScienceDaily.com Towards compact quantum computers thanks to topology

Researchers at PSI have compared the electron distribution below the oxide layer of two semiconductors. The investigation is part of an effort to develop particularly stable quantum bits -- and thus, in turn, particularly efficient quantum computers.

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19:31 Phys.org Towards compact quantum computers thanks to topology

Researchers at PSI have compared the electron distribution below the oxide layer of two semiconductors. The investigation is part of an effort to develop particularly stable quantum bits—and thus, in turn, particularly efficient quantum computers. They have now published their latest research, which is supported in part by Microsoft, in the journal Advanced Quantum Technologies.

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15:55 Technology.org How Sandia Labs is revealing the inner workings of quantum computers

Gate set tomography used to discover and validate 2 innovations in the area of quantum computers published in

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12:19 Nanowerk.com Enhancing simulations of curved space with qubits

One of the mind-bending ideas that physicists and mathematicians have come up with is that space itself - not just objects in space - can be curved. When space curves (as happens dramatically near a black hole), sizes and directions defy normal intuition. Understanding curved spaces is important to expanding our knowledge of the universe, but it is fiendishly difficult to study curved spaces in a lab setting.

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11:56 Nanowerk.com Quantum computing in silicon hits 99 per cent accuracy (w/video)

New research paves the way for large silicon-based quantum processors for real-world manufacturing and application.

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08:59 Technology.org How Sandia Labs is revealing the inner workings of quantum computers

Gate set tomography used to discover and validate 2 innovations published in Nature A precision diagnostic developed at

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05:39 ScienceDaily.com Quantum computing in silicon hits 99% accuracy

Researchers have proven that near error-free quantum computing is possible, paving the way to build silicon-based quantum devices compatible with current semiconductor manufacturing technology.

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00:47 ScienceDaily.com Inner workings of quantum computers

A precision diagnostic is emerging as a gold standard for detecting and describing problems inside quantum computing hardware.

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00:47 ScienceDaily.com Scientists achieve key elements for fault-tolerant quantum computation in silicon spin qubits

Researchers have achieved a key milestone toward the development of a fault-tolerant quantum computer. They were able to demonstrate a two-qubit gate fidelity of 99.5 percent -- higher than the 99 percent considered to be the threshold for building fault-tolerant computers -- using electron spin qubits in silicon, which are promising for large-scale quantum computers as the nanofabrication technology for building them already exists.

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19.01.2022
21:18 Phys.org Semiconductor spin qubits gain further credibility as leading platform for quantum computing

Researchers at QuTech—a collaboration between the Delft University of Technology and TNO—have taken an important step for semiconductor spin qubits by surpassing the 99% barrier for two-qubit gate fidelity. They report on their findings in Nature on 19 January 2021 and are featured on the issue's cover. Two independent works from groups at UNSW Sydney and at RIKEN report similar results in the same issue of Nature.

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19:31 Nature.Com Silicon qubits move a step closer to achieving error correction

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19:31 Nature.Com Precision tomography of a three-qubit donor quantum processor in silicon

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19:31 Nature.Com Quantum logic with spin qubits crossing the surface code threshold

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19:31 Nature.Com Fast universal quantum gate above the fault-tolerance threshold in silicon

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19:01 Phys.org Quantum computing in silicon hits 99% accuracy

UNSW Sydney-led research paves the way for large silicon-based quantum processors for real-world manufacturing and application.

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19:01 Phys.org Scientists achieve key elements for fault-tolerant quantum computation in silicon spin qubits

Researchers from RIKEN and QuTech—a collaboration between TU Delft and the Netherlands Organisation for Applied Scientific Research (TNO)— have achieved a key milestone toward the development of a fault-tolerant quantum computer. They were able to demonstrate a two-qubit gate fidelity of 99.5 percent—higher than the 99 percent considered to be the threshold for building fault-tolerant computers—using electron spin qubits in silicon, which are promising for large-scale quantum computers as the nanofabrication technology for building them already exists. This study was published in Nature.

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19:01 Phys.org Gate set tomography: How physicists are revealing the inner workings of quantum computers

A precision diagnostic developed at the Department of Energy's Sandia National Laboratories is emerging as a gold standard for detecting and describing problems inside quantum computing hardware.

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18:43 QuantaMagazine.org Computer Scientists Eliminate Pesky Quantum Computations

For years, intermediate measurements made it hard to quantify the complexity of quantum algorithms. New work establishes that those measurements aren’t necessary after all. The post Computer Scientists Eliminate Pesky Quantum Computations first appeared on Quanta Magazine

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16:24 Phys.org Enhancing simulations of curved space with qubits

One of the mind-bending ideas that physicists and mathematicians have come up with is that space itself—not just objects in space—can be curved. When space curves (as happens dramatically near a black hole), sizes and directions defy normal intuition. Something as straightforward as defining a straight line requires careful consideration.

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18.01.2022
18:38 NewScientist.Com First fully programmable quantum computer based on neutral atoms

Most quantum computers are based on superconductors or trapped ions, but an alternative approach using ordinary atoms may have advantages

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17.01.2022
15:07 Technology.org A language for Quantum computing

Time crystals. Microwaves. Diamonds. What do these three disparate things have in common? Quantum computing. Unlike traditional computers

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13.01.2022
15:06 Photonics.com Squeezed Light Source Aims to Hasten Arrival of Large-Scale Quantum Computers

NTT Corp., in collaboration with the University of Tokyo and RIKEN, has developed an optical fiber-coupled quantum light source. Such a light source that can produce squeezed light is considered to be a crucial component to realizing a fault-tolerant, large-scale universal optical quantum computer. To achieve a large-scale universal fault-tolerant optical quantum computer, the light source would require highly squeezed quantum noise and photon number parity that is maintained even in high-photon-number components. For instance, a squeezing level of more than 65% is required to generate time-domain multiple quantum entanglement, or two-dimensional clustered states, that can be used for large-scale quantum computation. The newly...

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12.01.2022
18:04 Nanowerk.com Building a silicon quantum computer chip atom by atom (w/video)

Researchers have perfected a technique for embedding single atoms in a silicon wafer one-by-one. Their technology offers the potential to make quantum computers using the same methods that have given us cheap and reliable conventional devices containing billions of transistors.

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16:39 Phys.org Building a silicon quantum computer chip atom by atom

A University of Melbourne-led team has perfected a technique for embedding single atoms in a silicon wafer one-by-one. Their technology offers the potential to make quantum computers using the same methods that have given us cheap and reliable conventional devices containing billions of transistors.

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11.01.2022
19:58 Phys.org In-fridge controller could scale up quantum computers

A collaboration between computer scientists and physicists at the University of Chicago broke through one of the key obstacles for large-scale quantum computing by figuring out how to move their control signals "inside the fridge."

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10.01.2022
18:14 SingularityHub.Com These Will Be the Earliest Use Cases for Quantum Computers

Quantum computing is expected to revolutionize a broad swathe of industries. But as the technology edges closer to commercialization, what will the earliest use cases be? Quantum computing is still a long way from going mainstream. The industry had some significant breakthroughs in 2021 though, not least IBM’s unveiling of the first processor to cross […]

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06.01.2022
18:48 QuantaMagazine.org Qubits Can Be as Safe as Bits, Researchers Show

A new result shows that quantum information can theoretically be protected from errors just as well as classical information can. The post Qubits Can Be as Safe as Bits, Researchers Show first appeared on Quanta Magazine

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02.01.2022
12:51 NewScientist.Com 2022 preview: Quantum computers may finally become useful tools

"Google and other research teams have proved that quantum computers can operate faster than a regu-lar machine, but in 2022 we might actually see them tackle useful problems

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31.12.2021
02:52 ScienceDaily.com A-list candidate for fault-free quantum computing delivers surprise

Superconducting uranium ditelluride is a promising material in the race to create fault-tolerant quantum computers, but physicists are rethinking how superconductivity arises in the material in light of puzzling new experimental evidence.

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23.12.2021
21:58 Physics.Aps.org Focus: Real-Time Error Correction for Quantum Computing

Author(s): Philip BallAn experiment shows that errors in quantum computation can be repeatedly corrected on the fly. [Physics 14, 184] Published Thu Dec 23, 2021

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10:32 Technology.org A-list candidate for fault-free quantum computing delivers surprise

A Rice University-led study is forcing physicists to rethink superconductivity in uranium ditelluride, an A-list material in the

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08:59 Technology.org Measuring a quantum computer’s power just got faster and more accurate

Scientists at Sandia National Labs invent new yardstick for benchmarking performance  What does a quantum computer have in

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22.12.2021
19:02 Phys.org A-list candidate for fault-free quantum computing delivers surprise

A Rice University-led study is forcing physicists to rethink superconductivity in uranium ditelluride, an A-list material in the worldwide race to create fault-tolerant quantum computers.

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01:51 ScienceDaily.com Measuring a quantum computer’s power just got faster and more accurate

What does a quantum computer have in common with a top draft pick in sports? Both have attracted lots of attention from talent scouts. Quantum computers, experimental machines that can perform some tasks faster than supercomputers, are constantly evaluated, much like young athletes, for their potential to someday become game-changing technology.

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20.12.2021
19:11 Phys.org Measuring a quantum computer's power just got faster and more accurate

What does a quantum computer have in common with a top draft pick in sports? Both have attracted lots of attention from talent scouts. Quantum computers, experimental machines that can perform some tasks faster than supercomputers, are constantly evaluated, much like young athletes, for their potential to someday become game-changing technology.

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18:01 Phys.org Peers dispute claim that tardigrades were entangled with qubits

Scientists and journalists alike are disputing claims made by an international team of researchers that they had entangled a tardigrade with superconducting qubits. Their paper is published on the arXiv preprint server. Virtually all of those with an opinion pointed out that the work by the researchers in this new effort did not involve entanglement.

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11:44 NewScientist.Com 2021 in review: Jian-Wei Pan leads China’s quantum computing successes

In July, the University of Science and Technology of China announced it had surpassed Google’s claimed quantum supremacy achievement. China’s ambitious quantum computing efforts are all under the oversight of one man, Jian-Wei Pan

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16.12.2021
23:19 Phys.org Research team takes important step in quantum computing with error correction

Researchers at QuTech—a collaboration between the TU Delft and TNO—have reached a milestone in quantum error correction. They have integrated high-fidelity operations on encoded quantum data with a scalable scheme for repeated data stabilization. The researchers report their findings in the December issue of Nature Physics.

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15.12.2021
18:06 Phys.org Flawed diamonds may provide perfect interface for quantum computers

Flaws in diamonds—atomic defects where carbon is replaced by nitrogen or another element—may offer a close-to-perfect interface for quantum computing, a proposed communications exchange that promises to be faster and more secure than current methods. There's one major problem, though: These flaws, known as diamond nitrogen-vacancy centers, are controlled via magnetic field, which is incompatible with existing quantum devices. Imagine trying to connect an Altair, an early personal computer developed in 1974, to the internet via WiFi. It's a difficult, but not impossible task. The two technologies speak different languages, so the first step is to help translate.

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14:56 Nanowerk.com Flawed diamonds may provide perfect interface for quantum computers

Researchers have developed an interface approach to control the diamond nitrogen-vacancy centers in a way that allows direct translation to quantum devices.

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13.12.2021
10:58 Technology.org A new super-cooled microwave source boosts the scale-up of quantum computers

Researchers in Finland have developed a circuit that produces the high-quality microwave signals required to control quantum computers

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10.12.2021
12:18 Technology.org A new algorithm increases the efficiency of quantum computers

Quantum computing is taking a new leap forward due to research that has proposed a scheme to reduce

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04:53 ScienceDaily.com A new super-cooled microwave source boosts the scale-up of quantum computers

Researchers have developed a circuit that produces the high-quality microwave signals required to control quantum computers while operating at temperatures near absolute zero. This is a key step towards moving the control system closer to the quantum processor, which may make it possible to greatly increase the number of qubits in the processor.

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09.12.2021
20:35 Phys.org Crucial leap in error mitigation for quantum computers

Researchers at Lawrence Berkeley National Laboratory's Advanced Quantum Testbed (AQT) demonstrated that an experimental method known as randomized compiling (RC) can dramatically reduce error rates in quantum algorithms and lead to more accurate and stable quantum computations. No longer just a theoretical concept for quantum computing, the multidisciplinary team's breakthrough experimental results are published in Physical Review X.

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20:12 Nanowerk.com A new super-cooled microwave source boosts the scale-up of quantum computers

Researchers have developed a circuit that produces the high-quality microwave signals required to control quantum computers while operating at temperatures near absolute zero. This is a key step towards moving the control system closer to the quantum processor, which may make it possible to greatly increase the number of qubits in the processor.

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08.12.2021
13:45 Technology.org Quantum computing breakthrough in error correction

Quantum computers are seen as a beacon of hope for future information processing. However, uncertainty exists as to

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07.12.2021
21:36 Phys.org Algorithm to increase the efficiency of quantum computers

Quantum computers have the potential to solve important problems that are beyond reach even for the most powerful supercomputers, but they require an entirely new way of programming and creating algorithms.

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06.12.2021
15:06 Photonics.com Photonic Quantum Computer Changes Operations Without Changing Hardware

Stanford University researchers have proposed a design for photonic quantum computer that uses readily available components and a laser to manipulate a single atom that can modify the state of the photons in the system via the phenomenon of quantum teleportation. The researchers said their photonic design is simpler than today’s quantum computers that are difficult to scale up and that require temperatures colder than interstellar space to operate. Though scientists have previously created photonic quantum computers that operate at room temperature, which makes them a promising approach to quantum computing, it is challenging to construct large numbers of logic gates for photons that connect in a reliable fashion to enable...

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03.12.2021
03:50 ScienceDaily.com Twisting elusive quantum particles with a quantum computer

While the number of qubits and the stability of quantum states are still limiting current quantum computing devices, there are questions where these processors are already able to leverage their enormous computing power. Scientists used a quantum processor to simulate the ground state of a so-called toric code Hamiltonian -- an archetypical model system in modern condensed matter physics, which was originally proposed in the context of quantum error correction.

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02.12.2021
06:41 ScienceDaily.com Shrinking qubits for quantum computing with atom-thin materials

Current approaches to create superconducting qubits for quantum computers yield chips that are substantially larger than those found in classical computers. To shrink things down, researchers have taken advantage of atomically thin, 2D materials to construct the necessary capacitors for superconducting qubits. Their two-qubit chip is 1,000x smaller than those made with conventional fabrication techniques.

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01.12.2021
10:49 Technology.org Stanford physicists help create time crystals with quantum computers

There is a huge global effort to engineer a computer capable of harnessing the power of quantum physics

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10:17 Nanowerk.com Shrinking qubits for quantum computing with 2D materials

Using atom-thin materials, researchers have built superconducting qubits that are a fraction of previous sizes, paving the way for smaller quantum computers.

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30.11.2021
23:58 Phys.org Shrinking qubits for quantum computing with atom-thin materials

For quantum computers to surpass their classical counterparts in speed and capacity, their qubits—which are superconducting circuits that can exist in an infinite combination of binary states—need to be on the same wavelength. Achieving this, however, has come at the cost of size. Whereas the transistors used in classical computers have been shrunk down to nanometer scales, superconducting qubits these days are still measured in millimeters—one millimeter is one million nanometers.

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21:57 ScienceDaily.com Time crystal in a quantum computer

Researchers have created and observed a new phase of matter, popularly known as a time crystal.

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20:04 Phys.org Physicists create time crystals with quantum computers

There is a huge global effort to engineer a computer capable of harnessing the power of quantum physics to carry out computations of unprecedented complexity. While formidable technological obstacles still stand in the way of creating such a quantum computer, today's early prototypes are still capable of remarkable feats.

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18:55 Phys.org Quantum computers getting connected for multiple task-optimized smaller systems

A promising route towards larger quantum computers is to orchestrate multiple task-optimized smaller systems. To dynamically connect and entangle any two systems, photonic interference emerges as a powerful method, due to its compatibility with on-chip devices and long-distance propagation in quantum networks.

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11:27 Technology.org Quantum computers getting connected

Research into superfast quantum computers is now well advanced, but it is not yet possible to connect the

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29.11.2021
23:53 Phys.org Researchers propose a simpler design for quantum computers

Today's quantum computers are complicated to build, difficult to scale up, and require temperatures colder than interstellar space to operate. These challenges have led researchers to explore the possibility of building quantum computers that work using photons—particles of light. Photons can easily carry information from one place to another, and photonic quantum computers can operate at room temperature, so this approach is promising. However, although people have successfully created individual quantum "logic gates" for photons, it's challenging to construct large numbers of gates and connect them in a reliable fashion to perform complex calculations.

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24.11.2021
21:04 Phys.org On-chip frequency shifters in the gigahertz range could be used in next generation quantum computers and networks

The ability to precisely control and change properties of a photon, including polarization, position in space, and arrival time, gave rise to a wide range of communication technologies we use today, including the Internet. The next generation of photonic technologies, such as photonic quantum networks and computers, will require even more control over the properties of a photon.

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22.11.2021
18:16 SingularityHub.Com IBM’s 127-Qubit Eagle Is the Biggest Quantum Computer Yet

Progress in quantum computing is no longer just about how big your chip is. But IBM has taken a major leap forward with the release of a 127-qubit processor. Milestones in quantum computing are getting increasingly difficult to asses as the variety of technologies and the yardsticks used to judge them proliferate. While both IBM […]

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19.11.2021
20:30 Nature.Com First quantum computer to pack 100 qubits enters crowded race

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17.11.2021
16:23 TechnologyReview.com This new startup has built a record-breaking 256-qubit quantum computer

At long last, physicists from Harvard and MIT have found the killer application for quantum computing: a Mario Bros. GIF made from qubits. The qubits (quantum bits) can also be arranged in a Space Invaders design, or Tetris, or any other shape—your geometrical wish is the qubits’ command. The GIFs are from QuEra Computing, a…

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16.11.2021
19:41 Phys.org IBM announces development of 127-qubit quantum processor

IBM has announced the development of a 127-qubit quantum processor, both on its IBM Quantum page and during IBM Quantum Summit 2021. As part of its announcement, IBM also announced that computers running the new processor will be made available to IBM Quantum Network members and that the company has plans for launching two other, presumably more powerful processors it has named Osprey and Condor over the next two years. The current processor has been named Eagle.

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18:48 QuantaMagazine.org How Quantum Computers Will Correct Their Errors

Quantum bits are fussy and fragile. Useful quantum computers will need to use an error-correction technique like the one that was recently demonstrated on a real machine. The post How Quantum Computers Will Correct Their Errors first appeared on Quanta Magazine

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15.11.2021
20:17 NewScientist.Com IBM creates largest ever superconducting quantum computer

IBM claims it has created a 127-qubit quantum computer. This is over double the size of comparable machines made by Google and the University of Science and Technology of China

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11.11.2021
06:53 Technology.org Photonic chip that isolates light could end size limitations in quantum computing and devices

Researchers at the University of Illinois used readily available materials to create a small photonic circuit that uses sound waves

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10.11.2021
17:15 Phys.org Laser light used to modulate free electrons into qubits

The laws of quantum physics are not only extraordinary—they also offer some far-reaching and unique possibilities for advanced information processing, quantum computing and cryptography. So far, the basic building blocks for such quantum operations are electric circuitry in form of superconducting resonators, light in form of photons or atoms in form of ion chains. However, all these quantum systems have their drawbacks, and scientists are therefore continuously searching for useful alternatives.

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11:46 Technology.org Photonic chip that isolates light could end size limitations in quantum computing and devices

Researchers at the University of Illinois used readily available materials to create a small photonic circuit that uses sound waves

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09.11.2021
20:55 Phys.org How a novel radio frequency control system enhances quantum computers

A team of physicists and engineers at Lawrence Berkeley National Laboratory (Berkeley Lab) successfully demonstrated the feasibility of low-cost and high-performance radio frequency modules for qubit controls at room temperature. They built a series of compact radio frequency (RF) modules that mix signals to improve the reliability of control systems for superconducting quantum processors. Their tests proved that using modular design methods reduces the cost and size of traditional RF control systems while still delivering superior or comparable performance levels to those commercially available.

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18:57 Phys.org Using new quantum computing architectures to create time crystals

UC Berkeley physicist Norman Yao first described five years ago how to make a time crystal—a new form of matter whose patterns repeat in time instead of space. Unlike crystals of emerald or ruby, however, those time crystals existed for only a fraction of a second.

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03.11.2021
13:18 TechnologyReview.com Hackers are stealing data today so quantum computers can crack it in a decade

While they wrestle with the immediate danger posed by hackers today, US government officials are preparing for another, longer-term threat: attackers who are collecting sensitive, encrypted data now in the hope that they’ll be able to unlock it at some point in the future.  The threat comes from quantum computers, which work very differently from…

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02.11.2021
13:52 ScientificAmerican.Com 2-D Room-Temperature Magnets Could Unlock Quantum Computing

A new magnetic material, just one atom thick, can manipulate electrons’ spin for next-generation data storage -- Read more on ScientificAmerican.com

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28.10.2021
20:12 Technology.org Physicists describe photons’ characteristics inherent to protecting future quantum computing

Consumers need to be confident that transactions they make online are safe and secure. A main method to

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27.10.2021
15:42 Phys.org Two Chinese teams claim to have reached primacy with quantum computers

Two teams in China are claiming that they have reached primacy with their individual quantum computers. Both have published the details of their work in the journal Physical Review Letters.

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26.10.2021
20:51 ScienceDaily.com Physicists describe photons’ characteristics to protect future quantum computing

Physicists have described in theoretical terms how to develop codes that cannot be broken by quantum computers -- computing devices of the future. These codes rely on distributing single photons that share a quantum character solely among the parties that wish to communicate.

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09:25 Technology.org Using qubits to search for dark matter

Wright Lab assistant professor David Moore, along with three colleagues from other institutions, recently proposed a novel idea

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21.10.2021
20:20 Phys.org Physicists describe photons' characteristics to protect future quantum computing

Consumers need to be confident that transactions they make online are safe and secure. A main method to protect customer transactions and other information is through encryption, where vital information is encoded with a key using complex mathematical problems that are difficult even for computers to solve.

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19.10.2021
21:20 Optics and Photonics News A Step Toward Fault-Tolerant Quantum Computing

Using a laser-controlled ion-trap platform, researchers demonstrate code that can detect and suppress errors—and keep them from spreading and multiplying through the system.

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18.10.2021
15:13 Phys.org Cutting through the noise: AI enables high-fidelity quantum computing

Researchers led by the Institute of Scientific and Industrial Research (SANKEN) at Osaka University have trained a deep neural network to correctly determine the output state of quantum bits, despite environmental noise. The team's novel approach may allow quantum computers to become much more widely used.

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13.10.2021
16:51 Optics.org US group develops optical quantum network in ‘real-world’ setting

ORNL, Stanford, Purdue demonstrate a QLAN with entangled photons over “Alice-Bob-Charlie” optical fiber network.

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16:24 Phys.org Study demonstrates the potential of a quantum computer comprised of a small processor and a storage unit

Quantum computing systems, computer systems that are based on the key principles of quantum theory, could significantly outperform conventional computing systems, both in terms of speed and performance. Over the past decade or so, many physicists worldwide have thus been trying to develop these systems and assess their potential.

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12.10.2021
20:32 NewScientist.Com Spies may be storing data to decrypt with a future quantum computer

Quantum computers may one day break encryption, and security researchers say intelligence agencies may already be storing encrypted data with a plan to crack it in future

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11.10.2021
17:01 Phys.org Quantum circuit black hole lasers to explore Hawking radiation

The fundamental forces of physics govern the matter comprising the universe, yet exactly how these forces work together is still not fully understood. The existence of Hawking radiation—the particle emission from near black holes—indicates that general relativity and quantum mechanics must cooperate. But directly observing Hawking radiation from a black hole is nearly impossible due to the background noise of the universe, so how can researchers study it to better understand how the forces interact and integrate into a "Theory of Everything?"

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13:44 NewScientist.Com A new dawn in AI and quantum computing now looks tantalisingly close

Hopes of developing artificial general intelligence and a truly useful quantum computer are looking less fanciful thanks to recent breakthroughs

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08.10.2021
16:29 Optics and Photonics News A Step Toward Fault-Tolerant Quantum Computing

Using a laser-controlled ion-trap platform, researchers demonstrate code that can detect and suppress errors—and keep them from spreading and multiplying through the system.

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07.10.2021
20:15 ScienceDaily.com Quantum networking milestone in real-world environment

A team has developed and demonstrated a novel, fully functional quantum local area network, or QLAN, to enable real-time adjustments to information shared with geographically isolated systems using entangled photons passing through optical fiber.

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08:35 Technology.org Researchers reach quantum networking milestone in real-world environment

A team from the U.S. Department of Energy’s Oak Ridge National Laboratory, Stanford University and Purdue University developed

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00:14 Phys.org Researchers reach quantum networking milestone in real-world environment

A team from the U.S. Department of Energy's Oak Ridge National Laboratory, Stanford University and Purdue University developed and demonstrated a novel, fully functional quantum local area network, or QLAN, to enable real-time adjustments to information shared with geographically isolated systems at ORNL using entangled photons passing through optical fiber.

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05.10.2021
12:57 Nanowerk.com How flawed diamonds lead to flawless quantum networks

Vacancies in diamonds have long been of interest to electronics researchers because they can be used as 'quantum nodes' or points that make up a quantum network for the transfer of data.

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04:19 ScienceDaily.com Foundational step shows quantum computers can be better than the sum of their parts

Researchers have experimentally demonstrated, for the first time, that an assembly of quantum computing pieces -- a logical qubit -- can be better than the worst parts used to make it. The team shared how they took this landmark step toward reliable, practical quantum computers by implementing the Bacon-Shor code and a fault-tolerant design on an ion trap-based quantum computer.

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04.10.2021
19:35 NewScientist.Com Quantum computers can now fix their own mistakes without making more

The first demonstration of error correction on a quantum computer that doesn't lead to more mistakes is a step towards genuinely useful computation

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18:08 Phys.org Foundational step shows quantum computers can be better than the sum of their parts

Pobody's nerfect—not even the indifferent, calculating bits that are the foundation of computers. But JQI Fellow Christopher Monroe's group, together with colleagues from Duke University, have made progress toward ensuring we can trust the results of quantum computers even when they are built from pieces that sometimes fail. They have shown in an experiment, for the first time, that an assembly of quantum computing pieces can be better than the worst parts used to make it. In a paper published in the journal Nature on Oct. 4, 2021, the team shared how they took this landmark step toward reliable, practical quantum computers.

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18:04 Nature.Com Fault-tolerant control of an error-corrected qubit

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17:08 SingularityHub.Com How Quantum Computers Can Be Used to Build Better Quantum Computers

Using computer simulations to design new chips played a crucial role in the rapid improvements in processor performance we’ve experienced in recent decades. Now Chinese researchers have extended the approach to the quantum world. Electronic design automation tools started to become commonplace in the early 1980s as the complexity of processors rose exponentially, and today […]

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01.10.2021
18:06 Phys.org How flawed diamonds 'lead' to flawless quantum networks

The color in a diamond comes from a defect, or "vacancy," where there is a missing carbon atom in the crystal lattice. Vacancies have long been of interest to electronics researchers because they can be used as 'quantum nodes' or points that make up a quantum network for the transfer of data. One of the ways of introducing a defect into a diamond is by implanting it with other elements, like nitrogen, silicon, or tin. In a recent study published in ACS Photonics, scientists from Japan demonstrate that lead-vacancy centers in diamond have the right properties to function as quantum nodes. "The use of a heavy group IV atom like lead is a simple strategy to realize superior spin properties at increased temperatures, but previous studies have not been consistent in determining the optical properties of lead-vacancy centers accurately," says Associate Professor Takayuki Iwasaki of Tokyo Institute of Technology (Tokyo Tech), who led the study.

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30.09.2021
22:08 ScienceDaily.com Connecting the dots between material properties and qubit performance

Scientists studying superconducting qubits identified structural and chemical defects that may be causing quantum information loss -- an obstacle to practical quantum computation.

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10:31 Technology.org Photonic chip is key to nurturing quantum computers

Quantum computers are gaining pace. They promise to provide exponentially more computing power for certain very tricky problems.

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