//www.koonmotors.com/news/computers_math/quantum_computers/ Quantum Computer Research. Read the latest news in developing quantum computers. en-us Wed, 06 Sep 2023 14:52:10 EDT Wed, 06 Sep 2023 14:52:10 EDT 60 //www.koonmotors.com/images/scidaily-logo-rss.png//www.koonmotors.com/news/computers_math/quantum_computers/ For more science news, visit ScienceDaily. //www.koonmotors.com/releases/2023/09/230904104623.htm Digital information exchange can be safer, cheaper and more environmentally friendly with the help of a new type of random number generator for encryption. The researchers behind the study believe that the new technology paves the way for a new type of quantum communication. Mon, 04 Sep 2023 10:46:23 EDT //www.koonmotors.com/releases/2023/09/230904104623.htm //www.koonmotors.com/releases/2023/08/230830131937.htm Researchers have developed a new approach to building quantum repeaters, devices that can link quantum computers over long distances. The new system transmits low-loss signals over optical fiber using light in the telecom band, a longstanding goal in the march toward robust quantum communication networks. Wed, 30 Aug 2023 13:19:37 EDT //www.koonmotors.com/releases/2023/08/230830131937.htm //www.koonmotors.com/releases/2023/08/230830130950.htm Quantum physics has allowed for the creation of sensors far surpassing the precision of classical devices. Now, several new studies show that the precision of these quantum sensors can be significantly improved using entanglement produced by finite-range interactions. Researchers were able to demonstrate this enhancement using entangled ion-chains with up to 51 particles. Wed, 30 Aug 2023 13:09:50 EDT //www.koonmotors.com/releases/2023/08/230830130950.htm //www.koonmotors.com/releases/2023/08/230829125953.htm The Mpemba effect is originally referred to the non-monotonic initial temperature dependence of the freezing start time, but it has been observed in various systems -- including colloids -- and has also become known as a mysterious relaxation phenomenon that depends on initial conditions. However, very few have previously investigated the effect in quantum systems. Now, the temperature quantum Mpemba effect can be realized over a wide range of initial conditions. Tue, 29 Aug 2023 12:59:53 EDT //www.koonmotors.com/releases/2023/08/230829125953.htm //www.koonmotors.com/releases/2023/08/230828162337.htm Researchers have implemented a quantum-based method to observe a quantum effect in the way light-absorbing molecules interact with incoming photons. Known as a conical intersection, the effect puts limitations on the paths molecules can take to change between different configurations. The observation method makes use of a quantum simulator, developed from research in quantum computing, and offers an example of how advances in quantum computing are being used to investigate fundamental science. Mon, 28 Aug 2023 16:23:37 EDT //www.koonmotors.com/releases/2023/08/230828162337.htm //www.koonmotors.com/releases/2023/08/230828130342.htm Scientists have developed a new method for detecting mid-infrared (MIR) light at room temperature using quantum systems. Mon, 28 Aug 2023 13:03:42 EDT //www.koonmotors.com/releases/2023/08/230828130342.htm //www.koonmotors.com/releases/2023/08/230824150751.htm A new approach to quantum light emitters generates a stream of circularly polarized single photons, or particles of light, that may be useful for a range of quantum information and communication applications. A team stacked two different, atomically thin materials to realize this chiral quantum light source. Thu, 24 Aug 2023 15:07:51 EDT //www.koonmotors.com/releases/2023/08/230824150751.htm //www.koonmotors.com/releases/2023/08/230824003857.htm The measurement values determined in sufficiently precise measurements of physical systems will vary based on the relation between the past and the future of a system determined by its interactions with the meter. This finding may explain why quantum experiments often produce paradoxical results that can contradict our common-sense idea of physical reality. Thu, 24 Aug 2023 00:38:57 EDT //www.koonmotors.com/releases/2023/08/230824003857.htm //www.koonmotors.com/releases/2023/08/230823122630.htm A team has created an artificial quantum magnet featuring a quasiparticle made of entangled electrons, the triplon. Wed, 23 Aug 2023 12:26:30 EDT //www.koonmotors.com/releases/2023/08/230823122630.htm //www.koonmotors.com/releases/2023/08/230823122600.htm Researchers have designed a new type of quantum computer that uses fermionic atoms to simulate complex physical systems. The processor uses programmable neutral atom arrays and is capable of simulating fermionic models in a hardware-efficient manner using fermionic gates. The team demonstrated how the new quantum processor can efficiently simulate fermionic models from quantum chemistry and particle physics. Wed, 23 Aug 2023 12:26:00 EDT //www.koonmotors.com/releases/2023/08/230823122600.htm //www.koonmotors.com/releases/2023/08/230817163933.htm Quantum physicists have successfully simulated super diffusion in a system of interacting quantum particles on a quantum computer. This is the first step in doing highly challenging quantum transport calculations on quantum hardware and, as the hardware improves over time, such work promises to shed new light in condensed matter physics and materials science. Thu, 17 Aug 2023 16:39:33 EDT //www.koonmotors.com/releases/2023/08/230817163933.htm //www.koonmotors.com/releases/2023/08/230816114057.htm Researchers have found a way to control the interaction of light and quantum 'spin' in organic semiconductors, that works even at room temperature. Wed, 16 Aug 2023 11:40:57 EDT //www.koonmotors.com/releases/2023/08/230816114057.htm //www.koonmotors.com/releases/2023/08/230815131829.htm Graphene nanoribbons have outstanding properties that can be precisely controlled. Researchers have succeeded in attaching electrodes to individual atomically precise nanoribbons, paving the way for precise characterization of the fascinating ribbons and their possible use in quantum technology. Tue, 15 Aug 2023 13:18:29 EDT //www.koonmotors.com/releases/2023/08/230815131829.htm //www.koonmotors.com/releases/2023/08/230811143820.htm Using scaffolds of folded DNA, engineers assembled arrays of quantum rods with desirable photonic properties that could enable them to be used as highly efficient micro-LEDs for televisions or virtual reality devices. Fri, 11 Aug 2023 14:38:20 EDT //www.koonmotors.com/releases/2023/08/230811143820.htm //www.koonmotors.com/releases/2023/08/230808110939.htm New research shows that electrical stimuli passed between neighboring electrodes can also affect non-neighboring electrodes. Known as non-locality, this discovery is a crucial milestone toward creating brain-like computers with minimal energy requirements. Tue, 08 Aug 2023 11:09:39 EDT //www.koonmotors.com/releases/2023/08/230808110939.htm //www.koonmotors.com/releases/2023/08/230803125558.htm Researchers used magnetic imaging to obtain the first direct visualization of how electrons flow in a special type of insulator, and by doing so they discovered that the transport current moves through the interior of the material, rather than at the edges, as scientists had long assumed. Thu, 03 Aug 2023 12:55:58 EDT //www.koonmotors.com/releases/2023/08/230803125558.htm //www.koonmotors.com/releases/2023/08/230803112955.htm Researchers found a way to tune the spin density in diamond by applying an external laser or microwave beam. The finding could open new possibilities for advanced quantum devices. Thu, 03 Aug 2023 11:29:55 EDT //www.koonmotors.com/releases/2023/08/230803112955.htm //www.koonmotors.com/releases/2023/08/230802162512.htm In a potential boon for quantum computing, physicists have shown that topologically protected quantum states can be entangled with other, highly manipulable quantum states in some electronic materials. Wed, 02 Aug 2023 16:25:12 EDT //www.koonmotors.com/releases/2023/08/230802162512.htm //www.koonmotors.com/releases/2023/07/230731144135.htm Everyday life involves the three dimensions or 3D -- along an X, Y and Z axis, or up and down, left and right, and forward and back. But, in recent years scientists have explored a 'fourth dimension' (4D), or synthetic dimension, as an extension of our current physical reality. Mon, 31 Jul 2023 14:41:35 EDT //www.koonmotors.com/releases/2023/07/230731144135.htm //www.koonmotors.com/releases/2023/07/230731110743.htm Many substances change their properties when they are cooled below a certain critical temperature. Such a phase transition occurs, for example, when water freezes. However, in certain metals there are phase transitions that do not exist in the macrocosm. They arise because of the special laws of quantum mechanics that apply in the realm of nature's smallest building blocks. It is thought that the concept of electrons as carriers of quantized electric charge no longer applies near these exotic phase transitions. Researchers have now found a way to prove this directly. Their findings allow new insights into the exotic world of quantum physics. Mon, 31 Jul 2023 11:07:43 EDT //www.koonmotors.com/releases/2023/07/230731110743.htm //www.koonmotors.com/releases/2023/07/230725123103.htm Researchers have created a quantum superposition state in a semiconductor nanostructure that might serve as a basis for quantum computing. The trick: two optical laser pulses that act as a single terahertz laser pulse. Tue, 25 Jul 2023 12:31:03 EDT //www.koonmotors.com/releases/2023/07/230725123103.htm //www.koonmotors.com/releases/2023/07/230713192858.htm A new theoretical study provides a framework for understanding nonlocality, a feature that quantum networks must possess to perform operations inaccessible to standard communications technology. By clarifying the concept, researchers determined the conditions necessary to create systems with strong, quantum correlations. Thu, 13 Jul 2023 19:28:58 EDT //www.koonmotors.com/releases/2023/07/230713192858.htm //www.koonmotors.com/releases/2023/07/230713142039.htm The future of electronics will be based on novel kinds of materials. Sometimes, however, the naturally occurring topology of atoms makes it difficult for new physical effects to be created. To tackle this problem, researchers have now successfully designed superconductors one atom at a time, creating new states of matter. Thu, 13 Jul 2023 14:20:39 EDT //www.koonmotors.com/releases/2023/07/230713142039.htm //www.koonmotors.com/releases/2023/07/230713141937.htm 路由信号与噪音隔离nd back-reflections are essential in many practical situations in classical communication as well as in quantum processing. In a theory-experimental collaboration, a team has achieved unidirectional transport of signals in pairs of 'one-way streets'. This research opens up new possibilities for more flexible signaling devices. Thu, 13 Jul 2023 14:19:37 EDT //www.koonmotors.com/releases/2023/07/230713141937.htm //www.koonmotors.com/releases/2023/07/230712124634.htm Nothing exists in a vacuum, but physicists often wish this weren't the case. If the systems that scientists study could be completely isolated from the outside world, things would be a lot easier. Take quantum computing. It's a field that's already drawing billions of dollars in support from tech investors and industry heavyweights including IBM, Google and Microsoft. But if the tiniest vibrations creep in from the outside world, they can cause a quantum system to lose information. Wed, 12 Jul 2023 12:46:34 EDT //www.koonmotors.com/releases/2023/07/230712124634.htm //www.koonmotors.com/releases/2023/07/230705143012.htm We interact with bits and bytes everyday -- whether that's through sending a text message or receiving an email. There's also quantum bits, or qubits, that have critical differences from common bits and bytes. These photons -- particles of light -- can carry quantum information and offer exceptional capabilities that can't be achieved any other way. Unlike binary computing, where bits can only represent a 0 or 1, qubit behavior exists in the realm of quantum mechanics. Through "superpositioning," a qubit can represent a 0, a 1, or any proportion between. This vastly increases a quantum computer's processing speed compared to today's computers. Experts are now investigating the inside of a quantum-dot-based light emitter. Wed, 05 Jul 2023 14:30:12 EDT //www.koonmotors.com/releases/2023/07/230705143012.htm //www.koonmotors.com/releases/2023/07/230705105838.htm Scientists show that even a few simple examples are enough for a quantum machine-learning model, the 'quantum neural networks', to learn and predict the behavior of quantum systems, bringing us closer to a new era of quantum computing. Wed, 05 Jul 2023 10:58:38 EDT //www.koonmotors.com/releases/2023/07/230705105838.htm //www.koonmotors.com/releases/2023/06/230629193313.htm A system using photonics-based synthetic dimensions could be used to help explain complex natural phenomena. Thu, 29 Jun 2023 19:33:13 EDT //www.koonmotors.com/releases/2023/06/230629193313.htm //www.koonmotors.com/releases/2023/06/230628130347.htm Scientists using one of the world's most powerful quantum microscopes have made a discovery that could have significant consequences for the future of computing. Researchers have discovered a spatially modulating superconducting state in a new and unusual superconductor Uranium Ditelluride (UTe2). This new superconductor may provide a solution to one of quantum computing's greatest challenges. Wed, 28 Jun 2023 13:03:47 EDT //www.koonmotors.com/releases/2023/06/230628130347.htm //www.koonmotors.com/releases/2023/06/230627191540.htm 科学家和工程师们已经宣布有ant advancement in developing fault-tolerant qubits for quantum computing. In a pair of articles, they report that, in experiments with flakes of semiconductor materials -- each only a single layer of atoms thick -- they detected signatures of 'fractional quantum anomalous Hall' (FQAH) states. The team's discoveries mark a first and promising step in constructing a type of fault-tolerant qubit because FQAH states can host anyons -- strange 'quasiparticles' that have only a fraction of an electron's charge. Some types of anyons can be used to make what are called 'topologically protected' qubits, which are stable against any small, local disturbances. Tue, 27 Jun 2023 19:15:40 EDT //www.koonmotors.com/releases/2023/06/230627191540.htm //www.koonmotors.com/releases/2023/06/230626164157.htm What good is a powerful computer if you can't read its output? Or readily reprogram it to do different jobs? People who design quantum computers face these challenges, and a new device may make them easier to solve. Mon, 26 Jun 2023 16:41:57 EDT //www.koonmotors.com/releases/2023/06/230626164157.htm //www.koonmotors.com/releases/2023/06/230620113751.htm Quantum technology is expected to fundamentally change many key areas of society. Researchers are convinced that there are many more useful quantum properties and applications to explore than those we know today. A team of researchers has now developed open-source, freely available software that will pave the way for new discoveries in the field and accelerate quantum research significantly. Tue, 20 Jun 2023 11:37:51 EDT //www.koonmotors.com/releases/2023/06/230620113751.htm //www.koonmotors.com/releases/2023/06/230614220609.htm Today's quantum computers often calculate the wrong answer because of noisy environments that interfere with the quantum entanglement of qubits. IBM Quantum has pioneered a technique that accounts for the noise to achieve reliable results. They tested this error mitigation strategy against supercomputer simulations run by physicists, and for the hardest calculations, the quantum computer bested the supercomputer. This is evidence for the utility of today's noisy quantum computers for performing real-world calculations. Wed, 14 Jun 2023 22:06:09 EDT //www.koonmotors.com/releases/2023/06/230614220609.htm //www.koonmotors.com/releases/2023/06/230608120940.htm Drawing from Schrodinger's cat thought experiment, scientists have built a 'critical cat code' qubit that uses bosons to store and process information in a way that is more reliable and resistant to errors than previous qubit designs. Thu, 08 Jun 2023 12:09:40 EDT //www.koonmotors.com/releases/2023/06/230608120940.htm //www.koonmotors.com/releases/2023/06/230606111725.htm A team has developed a more energy-efficient, tunable superconducting diode -- a promising component for future electronic devices -- that could help scale up quantum computers for industry and improve artificial intelligence systems. Tue, 06 Jun 2023 11:17:25 EDT //www.koonmotors.com/releases/2023/06/230606111725.htm //www.koonmotors.com/releases/2023/06/230605181236.htm Researchers have demonstrated the principle of using spatial correlations in quantum entangled beams of light to encode information and enable its secure transmission. Mon, 05 Jun 2023 18:12:36 EDT //www.koonmotors.com/releases/2023/06/230605181236.htm //www.koonmotors.com/releases/2023/06/230605181221.htm Researchers have demonstrated a quantum speedup over the most efficient classical computer algorithm possible for what is believed to be the first time. The accomplishment was performed on an IBM Montreal Quantum Falcon r4 27-qubit device. Mon, 05 Jun 2023 18:12:21 EDT //www.koonmotors.com/releases/2023/06/230605181221.htm //www.koonmotors.com/releases/2023/06/230601155957.htm Researchers have discovered they can detect atomic 'breathing,' or the mechanical vibration between two layers of atoms, by observing the type of light those atoms emitted when stimulated by a laser. The sound of this atomic 'breath' could help researchers encode and transmit quantum information. Thu, 01 Jun 2023 15:59:57 EDT //www.koonmotors.com/releases/2023/06/230601155957.htm //www.koonmotors.com/releases/2023/05/230531150158.htm Researchers working to improve the performance of superconducting qubits, the foundation of quantum computers, have been experimenting using different base materials in an effort to increase the coherent lifetimes of qubits. The coherence time is a measure of how long a qubit retains quantum information, and thus a primary measure of performance. Recently, scientists discovered that using tantalum in superconducting qubits makes them perform better, but no one has been able to determine why -- until now. Wed, 31 May 2023 15:01:58 EDT //www.koonmotors.com/releases/2023/05/230531150158.htm //www.koonmotors.com/releases/2023/05/230525141236.htm 科学家开发出了一种nanodevice可以我asure the absolute power of microwave radiation down to the femtowatt level at ultra-low temperatures -- a scale trillion times lower than routinely used in verifiable power measurements. The device has the potential to significantly advance microwave measurements in quantum technology. Thu, 25 May 2023 14:12:36 EDT //www.koonmotors.com/releases/2023/05/230525141236.htm //www.koonmotors.com/releases/2023/05/230525140312.htm Scientists have made a significant advancement with quantum technologies that could transform complex systems modelling with an accurate and effective approach that requires significantly re-duced memory. Thu, 25 May 2023 14:03:12 EDT //www.koonmotors.com/releases/2023/05/230525140312.htm //www.koonmotors.com/releases/2023/05/230524181906.htm Scientists have found a new way to create a crystalline structure called a 'density wave' in an atomic gas. The findings can help us better understand the behavior of quantum matter, one of the most complex problems in physics. Wed, 24 May 2023 18:19:06 EDT //www.koonmotors.com/releases/2023/05/230524181906.htm //www.koonmotors.com/releases/2023/05/230523123655.htm A quarter of a century ago, theoretical physicists proposed a way to transmit quantum information via quantum repeaters over long distances which would open the door to the construction of a worldwide quantum information network. Now, a new generation of researchers has built a quantum repeater node for the standard wavelength of telecommunication networks and transmitted quantum information over tens of kilometers. Tue, 23 May 2023 12:36:55 EDT //www.koonmotors.com/releases/2023/05/230523123655.htm //www.koonmotors.com/releases/2023/05/230518172002.htm The number of qubits in superconducting quantum computers has risen rapidly during the last years, but further growth is limited by the need for ultra-cold operating temperatures. Connecting several smaller processors could create larger, more computationally powerful quantum computers -- however doing so poses new challenges. Researchers have now demonstrated quantum entanglement between optical and microwave photons that could lay the foundation for such a future quantum network. Thu, 18 May 2023 17:20:02 EDT //www.koonmotors.com/releases/2023/05/230518172002.htm //www.koonmotors.com/releases/2023/05/230517122129.htm The connection between quantum physics and the theory of relativity is extremely hard to study. But now, scientists have set up a model system, which can help: Quantum particles can be tuned in such a way that the results can be translated into information about other systems, which are much harder to observe. This kind of 'quantum simulator' works very well and can lead to new insights about the nature of relativity and quantum physics. Wed, 17 May 2023 12:21:29 EDT //www.koonmotors.com/releases/2023/05/230517122129.htm //www.koonmotors.com/releases/2023/05/230511164516.htm 研究人员已经确定了小说范德瓦耳斯(vdW) magnets using cutting-edge tools in artificial intelligence (AI). In particular, the team identified transition metal halide vdW materials with large magnetic moments that are predicted to be chemically stable using semi-supervised learning. These two-dimensional (2D) vdW magnets have potential applications in data storage, spintronics, and even quantum computing. Thu, 11 May 2023 16:45:16 EDT //www.koonmotors.com/releases/2023/05/230511164516.htm //www.koonmotors.com/releases/2023/05/230508104927.htm Quantum dots in semiconductors such as silicon or gallium arsenide have long been considered hot candidates for hosting quantum bits in future quantum processors. Scientists have now shown that bilayer graphene has even more to offer here than other materials. The double quantum dots they have created are characterized by a nearly perfect electron-hole-symmetry that allows a robust read-out mechanism -- one of the necessary criteria for quantum computing. Mon, 08 May 2023 10:49:27 EDT //www.koonmotors.com/releases/2023/05/230508104927.htm //www.koonmotors.com/releases/2023/05/230504154031.htm An international team of researchers has developed a comprehensive manual for engineering spin dynamics in nanomagnets -- an important step toward advancing spintronic and quantum-information technologies. Thu, 04 May 2023 15:40:31 EDT //www.koonmotors.com/releases/2023/05/230504154031.htm //www.koonmotors.com/releases/2023/05/230504094950.htm Large numbers can only be factorized with a great deal of computational effort. Physicists are now providing a blueprint for a new type of quantum computer to solve the factorization problem, which is a cornerstone of modern cryptography. Thu, 04 May 2023 09:49:50 EDT //www.koonmotors.com/releases/2023/05/230504094950.htm //www.koonmotors.com/releases/2023/05/230502132244.htm Using a "spooky" phenomenon of quantum physics, researchers have discovered a way to double the resolution of light microscopes. Tue, 02 May 2023 13:22:44 EDT //www.koonmotors.com/releases/2023/05/230502132244.htm //www.koonmotors.com/releases/2023/04/230426210503.htm By superimposing two laser fields of different strengths and frequency, the electron emission of metals can be measured and controlled precisely to a few attoseconds. Physicists have shown that this is the case. The findings could lead to new quantum-mechanical insights and enable electronic circuits that are a million times faster than today. Wed, 26 Apr 2023 21:05:03 EDT //www.koonmotors.com/releases/2023/04/230426210503.htm //www.koonmotors.com/releases/2023/04/230424133553.htm A team of physicists has illuminated certain properties of quantum systems by observing how their fluctuations spread over time. The research offers an intricate understanding of a complex phenomenon that is foundational to quantum computing. Mon, 24 Apr 2023 13:35:53 EDT //www.koonmotors.com/releases/2023/04/230424133553.htm //www.koonmotors.com/releases/2023/04/230420135314.htm The 'spooky action at a distance' that once unnerved Einstein may be on its way to being as pedestrian as the gyroscopes that currently measure acceleration in smartphones. Thu, 20 Apr 2023 13:53:14 EDT //www.koonmotors.com/releases/2023/04/230420135314.htm //www.koonmotors.com/releases/2023/04/230420110125.htm Recently quantum computers started to work with more than just the zeros and ones we know from classical computers. Now a team demonstrates a way to efficiently create entanglement of such high-dimensional systems to enable more powerful calculations. Thu, 20 Apr 2023 11:01:25 EDT //www.koonmotors.com/releases/2023/04/230420110125.htm //www.koonmotors.com/releases/2023/04/230420080708.htm There are high expectations that quantum computers may deliver revolutionary new possibilities for simulating chemical processes. This could have a major impact on everything from the development of new pharmaceuticals to new materials. Researchers have now used a quantum computer to undertake calculations within a real-life case in chemistry. Thu, 20 Apr 2023 08:07:08 EDT //www.koonmotors.com/releases/2023/04/230420080708.htm //www.koonmotors.com/releases/2023/04/230419201928.htm In the future, communications networks and computers will use information stored in objects governed by the microscopic laws of quantum mechanics. This capability can potentially underpin communication with greatly enhanced security and computers with unprecedented power. A vital component of these technologies will be memory devices capable of storing quantum information to be retrieved at will. Wed, 19 Apr 2023 20:19:28 EDT //www.koonmotors.com/releases/2023/04/230419201928.htm //www.koonmotors.com/releases/2023/04/230419095535.htm In the quantum world particles can instantaneously know about each other's state, even when separated by large distances. This is known as nonlocality. Now, A research group has produced some interesting findings on the Hardy nonlocality that have important ramifications for understanding quantum mechanics and its potential applications in communications. Wed, 19 Apr 2023 09:55:35 EDT //www.koonmotors.com/releases/2023/04/230419095535.htm //www.koonmotors.com/releases/2023/04/230419095523.htm Researchers report having achieved quantum teleportation from a photon to a solid-state qubit over a distance of 1km, with a novel approach using multiplexed quantum memories. Wed, 19 Apr 2023 09:55:23 EDT //www.koonmotors.com/releases/2023/04/230419095523.htm //www.koonmotors.com/releases/2023/04/230419095516.htm A team has shown in the laboratory the unique and practical function of newly created materials, which they called quantum composites, that may advance electrical, optical, and computer technologies. Wed, 19 Apr 2023 09:55:16 EDT //www.koonmotors.com/releases/2023/04/230419095516.htm //www.koonmotors.com/releases/2023/04/230418101439.htm Solids can be melted by heating, but in the quantum world it can also be the other way around: An experimental team has shown how a quantum liquid forms supersolid structures by heating. The scientists obtained a first phase diagram for a supersolid at finite temperature. Tue, 18 Apr 2023 10:14:39 EDT //www.koonmotors.com/releases/2023/04/230418101439.htm