Articles tagged with Qubits
RMIT researchers have successfully trialled a quantum processor capable of routing quantum information from different locations, opening a pathway towards the first quantum data bus. This breakthrough has significant implications for future quantum technologies, including quantum computing and secure communication.
Researchers at the University of Oregon have developed a way to control electron states using both light and sound waves, providing a potential breakthrough for quantum computing. This method uses sound waves to manipulate qubits, which are essential for building advanced quantum systems.
Researchers at MIT describe a feedback-control system that preserves quantum superposition in nitrogen-vacancy centers, enabling reliable quantum computing. The system uses entangled spins of nitrogen and NV center atoms to correct errors during computations.
Builders of future superconducting quantum computers may learn from semiconductors to simplify operation and improve qubits. Researchers found an efficient implementation using novel control approaches, eliminating costly overheads for control and reducing gate error rates.
A team of researchers from INRS has successfully generated multiphoton entangled quantum states using on-chip optical frequency combs. This breakthrough paves the way for practical applications of quantum computing, enabling secure data transfer and superfast processing.
Majorana zero modes are present and protected in a superconducting state, storing quantum information in a way that leaves the quantum state intact when either location is disturbed. This finding verifies previous experiments and goes further by showing that Majorana modes are protected as predicted theoretically.
Researchers from MIT and University of Innsbruck have designed a scalable quantum system that can factor large numbers efficiently using 5 atoms. This breakthrough represents the first implementation of Shor's algorithm in a scalable manner, enabling potential cracking of encryption schemes for protecting sensitive data.
Scientists have developed a novel method to control the Berry phase of a quantum state in a nitrogen-vacancy center in diamond, enabling robust quantum logic operations. The approach uses laser light to draw paths for the defect's spin, resulting in insensitive behavior to noise sources.
Researchers at JQI develop interface between photons and single electrons, enabling fast interaction and scalable integration on a chip. This breakthrough advances quantum networks and enables entanglement distribution, secret communication, and complex quantum devices.
A team of researchers has been awarded a grant to develop a new ion technology for tackling quantum computing's error control challenge. The goal is to build modular super-qubits that can correct errors and scale up quantum information applications.
Researchers at Oxford's NQIT Hub develop a hybrid logic gate using calcium-40 and -43 ions, demonstrating precision beyond the fault-tolerant threshold. This achievement advances the development of trapped-ion quantum computing and its potential to solve complex problems in chemistry and biology.
Physicists at NIST have performed logic operations with two atoms of different elements, a hybrid design that could be an advantage in large computers and networks. The experiment demonstrates the feasibility of mixed-atom gates, which rely on entangling ions using custom traps and laser beams.
Researchers created cleverly designed molecular complexes that can store information in a quantum state, overcoming one of the biggest challenges in quantum computing. These new molecules could potentially lead to the development of functional devices and more efficient computer designs.
Physicists at UNSW Australia and the University of Melbourne have designed a scalable 3D silicon chip architecture based on single atom quantum bits, enabling the development of operational quantum computers. The design provides an endpoint in the international race to build such systems.
Researchers at University of Innsbruck propose new quantum computer architecture that detaches logical qubit from physical implementation, overcoming challenges in adiabatic quantum computation. This approach enables scalable and fault-tolerant quantum computing.
Researchers at the University of New South Wales have successfully built a silicon quantum computer, overcoming a crucial hurdle. The achievement enables the creation of a logic gate using two qubits, paving the way for a full-scale processor chip.
Physicists at the University of Basel have demonstrated that electron exchange limits the stability of quantum information in qubits. By controlling this exchange process, they can extend coherence times and improve quantum computing performance.
Researchers at Penn State have developed a method for addressing individual neutral atoms using laser light, enabling the creation of quantum computers. The technique allows for precise control over qubits and enables quantum computing applications such as factoring large numbers used in secure codes.
Researchers have developed a new quantum error correction code that can correct errors afflicting a specified fraction of qubits, not just the square root of their number. This protocol requires little measure of quantum states and can correct virtually all errors in quantum memory.
Scientists at the University of York have developed a protocol to achieve key-rates at metropolitan distances three orders-of-magnitude higher than previously. This breakthrough enables the creation of secure communication technologies for consumer, commercial and government markets.
Researchers at Georgia Tech have developed a microfabricated ion trap architecture that increases qubit density and brings us closer to building a quantum computer. The new design uses ball grid array techniques to fit more electrodes onto the chip, paving the way for increased scalability.
A UN SW-led research team has successfully encoded quantum information in silicon using simple electrical pulses for the first time. This breakthrough enables local control of individual qubits with electric fields, reducing development costs and making large-scale quantum computers more accessible.
Quantum physicists at the University of California - Santa Barbara have developed a quantum circuitry system that self-checks for errors and suppresses them, preserving qubits' state(s) and imbuing the system with reliability. The system uses the surface code scheme to detect errors based on parity information.
Physicist Kater Murch's experiment combines information about a quantum system's evolution before and after a target time to narrow the odds of correctly guessing its state. The 'hindsight' prediction is 90% accurate, suggesting that time runs both backward and forward in the quantum world.
Physicists use entangled ions to test the isotropy of space, disproving anisotropy theories. The experiment shows space is isotropic to one part in a billion billion, improving upon previous experiments.
Physicists at the University of Michigan have discovered samarium hexaboride, a topological insulator that could enable quantum computers and other next-generation electronics. The material's properties include rare Dirac electrons with potential applications in qubit development.
Researchers at UCSB's Martinis Lab successfully demonstrated a quantum version of Gauss's law using superconducting qubits. The team achieved full control over a two-qubit system, enabling precise measurement of local curvature through movement, showcasing the power of arbitrary control in quantum simulation.
Two research teams at UNSW Australia have developed high-accuracy quantum bits in silicon, surpassing 99% accuracy. The breakthroughs are published simultaneously in Nature Nanotechnology and aim to build powerful quantum computers.
Scientists at the Cavendish Laboratory and Joint Quantum Institute create a new type of qubit control that leverages its surroundings to maintain quantum integrity. By harnessing the environment's magnetic field, they enable efficient manipulation and readout of quantum states, paving the way for quantum computing advancements.
Researchers at CIFAR have developed a method to compress quantum information into fewer qubits while preserving its content. This breakthrough has significant implications for efficient quantum computing and communication.
Researchers at Perimeter Institute discovered novel states in graphene, a 1-atom-thick material, which exhibits the fractional quantum Hall effect. The discovery opens doors to studying new phenomena and potential applications in quantum computing.
Theorists propose using a bottom-up approach to create hybrid quantum devices by placing superconducting regions within silicon crystals. This could combine the benefits of both silicon spin qubits and superconducting circuits, enabling more robust qubit designs.
Scientists create optical nanofibers to trap atoms in a fragile state, addressing the challenge of decoherence in quantum computers. The new method improves transmission loss by two orders of magnitude, paving the way for hybrid quantum processors.
Physicists in Innsbruck developed a new quantum error-correcting method and tested it experimentally. The topological code arranges qubits on a two-dimensional lattice to detect and correct general errors. This approach could lead to a robust quantum computer performing any number of operations without being impeded by errors.
A new 5-qubit array demonstrates improved reliability in quantum computing, a crucial step towards building a functional quantum computer. The team's findings are based on theoretical work by Austin Fowler and the surface code architecture, which provides a way to control qubits properly.
Scientists at Yale have confirmed a long-held theoretical prediction in physics, improving the energy storage time of a quantum switch. The breakthrough opens new frontiers for quantum information processing and measurement systems.
Researchers confirm D-Wave uses quantum effects but are critical of its classification as a computer. The system solves optimization problems but is slower than traditional computers for most tests.
A team of scientists from USC developed a strategy to link quantum bits together into voting blocks, significantly boosting accuracy when the D-Wave quantum processor is led astray by noise. This method results in at least a five-fold increase in probability of reaching the correct answer on large problems.
Computer scientist Yi-Kai Liu has devised a method to create secure, one-shot memory units using quantum physics. The conjugate coding approach stores data in qubits, exploiting the lack of entanglement in certain physical systems to ensure security.
Researchers at NIST and the University of Copenhagen created an experiment where ions were linked to the outside world, resulting in a stable entangled state. This method could lead to new architectures for quantum computing that can tolerate noise and errors.
Researchers have achieved a world record by storing a fragile quantum state at room temperature for 39 minutes, overcoming a key barrier towards building ultrafast quantum computers. This breakthrough could lead to long-term coherent information storage and potential applications in ultra-secure authentication devices.
A team has achieved a world record 39 minutes for a fragile quantum state to survive at room temperature, paving the way for ultrafast quantum computers. The discovery demonstrates robust and long-lived qubits that could enable efficient quantum calculations.
Researchers have demonstrated a method to create polarization order from random fluctuations, enabling enhanced sensitivity in nanometer-scale magnetic resonance imaging (MRI) and potentially solid-state quantum computers. This achievement has the potential to revolutionize nano- and atomic-scale imaging techniques.
The USC-Lockheed Martin Quantum Computing Center has successfully demonstrated the functionality of a large-scale quantum optimization processor, with 128 qubits. The team verified that the device operates as a quantum processor, using quantum mechanics to solve optimization calculations.
A team of researchers at the University of New South Wales has proposed a new way to distinguish between quantum bits placed only a few nanometres apart, resolving two key technical challenges. The method involves using individual phosphorus atoms in silicon chips, allowing for precise control and operation of qubits.
Scientists at UC Santa Barbara have successfully manipulated a quantum bit using laser light, enabling more unified and versatile control than conventional methods. This breakthrough opens up the possibility of exploring new solid-state quantum systems and potentially leading to the creation of more efficient quantum computers.
Linköping University researchers have successfully initialized and read nuclear spins at room temperature, a crucial step towards building a quantum computer. The breakthrough uses dynamic nuclear polarisation to control the polarisation of nuclear spins, enabling the creation of a flow of free electrons with a given spin.
A team of Australian engineers at the University of New South Wales has demonstrated a functional quantum bit based on the nucleus of a single atom in silicon. The device operates with high accuracy and could revolutionize data processing in ultra-powerful quantum computers.
Researchers at Cambridge University have successfully generated high-quality photons identical to lasers from solid-state devices, a major breakthrough towards quantum networking. This achievement brings us closer to realizing a quantum internet, where distributed networks can share highly coherent and programmable photonic interconnects.
Recent advances enable control of individual atoms used in quantum information processing, paving the way for creation of powerful computers and highly sensitive detectors. Researchers explore ways to transmit quantum information over long distances and scale up the number of qubits.
Researchers explore ion traps as a promising architecture for constructing a quantum computer, leveraging qubits' coherence time and protection from ambient disturbances. The development of micro-fabricated devices and cryogenic cooling techniques aims to push the limits of pressure and storage capacity.
Scientists develop a method to preserve quantum bits (qubits) for longer periods, using hole spins instead of electron spins. This breakthrough brings the researchers closer to creating the first viable high-speed quantum computer.
Researchers at the University of Waterloo's Institute for Quantum Computing have proposed a new model for universal computation using multi-particle quantum walks, which could lead to significant quantum speedup and pave the way for scalable future experiments. The model has potential for natural realization in various systems.
Aalto University researchers have made a breakthrough in connecting a superconducting qubit with a micrometer-sized drum head, enabling the transfer of information between the two. This achievement opens up new possibilities for creating exotic mechanical quantum states, such as simultaneous vibration and non-vibration.
Scientists have found elusive Dirac electrons in a unique material, paving the way for faster and more secure quantum computing. The discovery uses superconducting properties to create a new kind of qubit, potentially overcoming local noise problems in quantum computers.
Researchers have successfully hybridized electronic and nuclear spin qubits using bismuth, enabling easier control over these complex systems. This breakthrough brings us closer to creating practical quantum computing capable of solving complex problems.
Researchers successfully excite a spin qubit using a resonant cavity, addressing challenges of quantum processing and decoherence. This breakthrough enables the transportation of quantum information over 'bus' conduits, similar to digital information in conventional computers.
Researchers at KIT have developed a method to control atomic tunneling frequencies in solids, using Josephson junctions. The technique allows for the direct measurement and manipulation of individual quantum systems, opening new possibilities for nanoelectronic components and materials science research.
Qubits can successfully exist in topological superconductor materials despite impurities and strong interactions. Majorana particles provide coherence-protection programs for qubits.
Researchers at NIST have accelerated beryllium ions to 100 miles per hour and controlled their deceleration, demonstrating precision control of fast acceleration and sudden stops. This breakthrough enables faster transport of ions, a crucial step in quantum computing, reducing processing overhead and improving overall performance.