Articles tagged with Qubits
Researchers have experimentally demonstrated a new quantum information storage protocol to create complex entangled states like GHZ quantum states. They used nuclear spins surrounding a central ytterbium ion qubit to store and retrieve quantum information with enhanced resilience.
Researchers at Google Quantum AI have successfully observed non-Abelian anyons, a type of particle predicted to break certain rules in physics. This breakthrough enables the creation of topological quantum computers, which can perform robust operations despite noise and errors.
Engineers at the University of New South Wales have created a solution for overcrowded circuitry in quantum computer chips by developing jellybean quantum dots in silicon. The device allows for spaced-out qubits that can interact with each other, enabling more efficient quantum computing.
Scientists at Forschungszentrum Juelich develop bilayer graphene quantum dots with near-perfect symmetry, allowing for efficient long-distance coupling and robust spin-state detection. This breakthrough has significant implications for the realization of large-scale quantum computers.
A team of researchers at Bar-Ilan University has improved the basic computation unit of quantum computers by developing a tunable superconducting flux qubit. This innovation enables quantum computers to operate with hundreds of qubits simultaneously, leading to significant advancements in computational power and potential applications.
Researchers at ICFO have successfully teleported quantum information over 1km using a multiplexed quantum memory. The technique enables fast and reliable quantum communication over long distances, with potential applications in secure telecommunications.
Researchers identify potential application of quantum compression in edge computing, which could save storage space and network bandwidth. Quantum compression, a new concept, is being explored as an enabling tool for edge applications, with classical techniques compared to quantum approaches.
Researchers at Argonne National Laboratory and University of Chicago developed a hybrid simulation process using IBM quantum computers to solve electronic structure problems. The new method uses classical processing to mitigate noise generated by the quantum computer, paving the way for future improvements.
Researchers at TU Wien develop a quantum version of the third law of thermodynamics, finding that absolute zero is theoretically attainable but requires infinite energy, time, or complexity. This breakthrough reconciles quantum physics with thermodynamics, paving the way for the development of practical quantum computers.
The new architecture reduces physical qubits required for error correction to 10% of conventional architectures, enabling better performance than classical computers. This breakthrough accelerates progress toward practical quantum computing, with the aim of applying quantum computing applications to various societal issues.
Research using a quantum computer has designed and characterized tailor-made magnetic objects using qubits, opening up new approaches to develop materials and robust quantum computing. The study demonstrates the ability to create magnetic quasicrystal lattices that can host states beyond classical information technology.
A team from UNIGE and ID Quantique has developed single-photon detectors that can generate secret keys at a rate of 64 megabits per second, overcoming current limitations. This innovation enables ultra-secure data transfer for banks, healthcare systems, governments, and the military.
Researchers at Korea Advanced Institute of Science and Technology used optical traps to throw chilled rubidium atoms over a distance of 4.2 micrometers, achieving 94% success rate. The technology could enable dynamic quantum computing and study single-atom collisions.
HRL Laboratories has demonstrated universal control of encoded spin qubits using a novel silicon-based qubit device architecture. The achievement offers a strong pathway toward scalable fault tolerance and computational advantage in quantum computing, with potential applications in materials development, drug discovery, and mitigating ...
Researchers at HZDR demonstrate the creation of controlled single-photon emitters in silicon, enabling mass production of photonic qubits for quantum computing. The breakthrough paves the way for industrial-scale photonic quantum processor production.
Researchers developed a wireless communication system that enables quantum computers to send and receive data using high-speed terahertz waves, reducing power consumption and error-causing heat. The system uses a transceiver chip and tiny mirrors to transmit data wirelessly, making it suitable for large-scale quantum systems.
Researchers at Oak Ridge National Laboratory have discovered that hydrogen atoms play a crucial role in twisting iron, enabling more efficient chemical reactions. Additionally, the lab has developed technology to reuse old electric vehicle batteries as energy storage systems for the grid, reducing pollution and carbon emissions.
Scientists at QuTech and Eindhoven University of Technology have successfully created Majorana particles in short nanowires, which could be scaled up to form more resilient qubits. The researchers' new approach focuses on electrical control, allowing them to manipulate the device while at low temperatures.
Researchers at MIT have proposed a new approach to making qubits and controlling them using beams of light from two lasers of slightly different colors. This method enables the direct manipulation of nuclear spin, allowing for precise identification and mapping of isotopes, as well as improved coherence times for quantum memory.
Researchers and industry leaders from around the world will gather in Sydney to discuss key areas of quantum computing, communications, sensing, training, entrepreneurship, and policy. The three-day event is expected to feature insights on cyber security, sustainability, and commercialization, with over 700 attendees.
Researchers have demonstrated a new type of quantum bit, called 'flip-flop' qubit, which combines the properties of single atoms with easy controllability using electric signals. The qubit is made up of two spins belonging to the same atom and can be programmed by displacing an electron with respect to the nucleus.
Researchers have developed a new device that can effectively redistribute noise and reduce its impact on quantum measurements. By 'squeezing' the noise, they can make more accurate measurements, enabling faster and more precise quantum systems. The device has the potential to improve multi-qubit systems and metrological applications.
Researchers from Nanjing University have proposed the first scheme to practically generate N-photon states deterministically using a lithium-niobate-on-insulator platform. The scheme involves deterministic parametric down-conversion and demonstrates feasibility for generating multiphoton qubit states.
Researchers at the University of Rochester develop a new method to control electron spin in silicon quantum dots, paving the way for practical silicon-based quantum computers. The technique harnesses spin-valley coupling to manipulate qubits without oscillating magnetic fields.
A team of scientists has discovered a way to preserve quantum coherence in quantum dot spin qubits by exploiting the properties of a material with the same lattice parameter. This breakthrough improves storage time beyond hundred microseconds, paving the way for practical quantum networks and computing applications.
Researchers have developed a novel way to measure a quantum device's accuracy by analyzing universal statistical patterns in the noise. This approach takes advantage of the way information is scrambled in quantum systems, allowing for more efficient error detection and verification.
A new Swedish quantum computer is being made available to the industry, accompanied by a test bed and a quantum helpdesk. The test bed will allow companies and researchers to solve problems using quantum technology at a significantly lower cost than existing commercial options.
Physicists at MIT and Caltech developed a new benchmarking protocol to characterize the fidelity of quantum analog simulators, enabling high precision characterization. The protocol analyzes random fluctuations in atomic-scale systems, revealing universal patterns that can be used to gauge the accuracy of these devices.
Researchers at Bar-Ilan University have successfully developed superconducting flux qubits with unprecedented long and reproducible coherence times, overcoming a significant hurdle in solving scalability problems. This breakthrough enables the potential applications of quantum hybrid circuits and quantum computation.
Researchers have developed a quantum computing architecture that enables directional photon emission, the first step toward extensible quantum interconnects. This breakthrough enables the creation of larger-scale devices by linking multiple processing modules along a common waveguide.
Illinois researchers create a metamaterial that changes its functionality based on power input, mimicking semiconductor behavior. The material's non-linear properties enable the creation of qubits dynamically, promising new quantum information systems.
AQT at Berkeley Lab organized a workshop on classical control systems for quantum computing, bringing together industry leaders and researchers to share experimental control advances. The workshop highlighted the need for advanced features in classical control electronic systems to optimize quantum computer performance.
A USTC research team achieved on-demand storage of photonic qubits at telecom wavelengths using a laser-written waveguide fabricated in an erbium-doped crystal. This innovation increases photon storage efficiency by up to fivefold, reaching 98.3% fidelity and enabling large-scale quantum networking applications.
Researchers at Google Quantum AI used a quantum processor to create bound states of interacting photons, which survived in a chaotic regime. The discovery challenges previous assumptions and has implications for many-body quantum dynamics and fundamental physics discoveries.
Researchers have developed a new microscope that can measure supercurrent flow at extremely small scales and high energies. The Cryogenic Magneto-Terahertz Scanning Near-field Optical Microscope (cm-SNOM) instrument is being used to study superconductivity, which has applications in quantum computing and medical imaging.
Researchers at Harvard John A. Paulson School of Engineering and Applied Sciences have developed an integrated electro-optic modulator that can efficiently change the frequency and bandwidth of single photons on a chip. This device could be used for more advanced quantum computing and quantum networks.
A team of quantum engineers at UNSW Sydney has developed a method to reset a quantum computer using a fast digital voltmeter to watch the temperature of an electron, reducing preparation errors from 20% to 1%. This innovation represents a modern twist on Maxwell's demon, a thought experiment that dates back to 1867.
Researchers at Penn Engineering have created a chip that outstrips existing quantum communications hardware, communicating in qudits and doubling the quantum information space. The technology enables significant advances in quantum cryptography, raising the maximum secure key rate for information exchange.
The study proposes new ways to organize magnetic molecules in two dimensions, enabling the effective application of molecular systems in devices. Researchers aim to improve the stability of organometallic monomolecular magnets and develop more efficient surface deposition processes.
Researchers at the University of Innsbruck have developed a new architecture for universal quantum computers using parity-based qubits. This design reduces the complexity of implementing complex algorithms while also offering hardware-efficient error correction.
Researchers aim to use quantum computer-based AI to accelerate drug discovery, cutting costs and time by exponentially increasing processing power for complex problems. Quantum AI models have higher capability to approximate desired functionality compared to classical neural networks.
Researchers at the University of Tokyo have identified possible solutions to limitations of qubits for quantum computing. They successfully controlled temperature and movement of trapped electrons in a vacuum using hybrid quantum systems, paving the way for potential applications in quantum technology.
Scientists from Paderborn and Ulm universities create a programmable optical quantum memory, enabling the efficient growth of large entangled states. This breakthrough milestone brings researchers closer to practical applications of useful quantum technologies.
A team at Lawrence Berkeley National Laboratory has developed a method to create tiny light-emitting points called color centers in twisted crystalline boron nitride, which can be easily controlled between two quantum states. This breakthrough offers a route toward scalable quantum computing and sensing.
A team of researchers at UNSW Sydney has broken new ground by proving that 'spin qubits' can hold information for up to two milliseconds, a significant improvement over previous benchmarks. By extending the coherence time, they enable more efficient quantum operations and better maintain information during calculations.
The QuTech team engineered a record number of six silicon-based spin qubits in a fully interoperable array, achieving low error-rates through new chip design and methods. This advances scalable quantum computers based on silicon, contributing to the development of fault-tolerant quantum computing.
Molecular qubits are more stable in asymmetric environments, according to a study published in Physical Review X. This discovery opens new doors for potential applications of emerging technology. The asymmetric environment provides coherence protection, allowing the qubits to keep their quantum information even in chaotic places.
Researchers at Toshiba Corporation achieved a breakthrough in quantum computer architecture with the development of a double-transmon coupler. This technology enables high-speed quantum computations with strong coupling and completely turns off residual coupling, improving accuracy and processing time.
Researchers have developed a new error correction technique called MBE-CQEC, which uses continuous measurement to detect and correct quantum errors. This approach is potentially powerful for quantum computers, but still requires experimental validation and has limitations as the number of qubits increases.
Researchers at NICT have developed a new systematic method to identify the optimal quantum operation sequence, enabling efficient task execution and contributing to improving quantum computer performance and reducing environmental impact. The method uses GRAPE algorithm to analyze all possible sequences of elementary quantum operations.
Researchers at Princeton University have discovered a new method to correct errors in quantum computers, potentially clearing a major obstacle. The technique increases the acceptable error rate four-fold, making it practical for current quantum systems.
Physicists have developed a 'master equation' to understand feedback control at the quantum level, enabling precise real-time control over quantum systems. This breakthrough has the potential to revolutionize quantum technologies by exploiting quantum effects and mitigating fragile system properties.
The University of Delaware and the University of New Mexico are collaborating on a $4 million grant to develop quantum photonics technologies. This initiative aims to prepare a skilled workforce for the growing quantum computing market, projected to grow from $486 million in 2021 to $3.2 billion by 2028.
Researchers at RIKEN have achieved error correction in a three-qubit silicon-based system, a major step toward large-scale quantum computing. This accomplishment demonstrates control of one of the largest qubit systems in silicon, providing a prototype for quantum error correction.
Researchers have developed new stable quantum batteries that can reliably store energy into electromagnetic fields. The micromaser system allows for efficient charging with protection against overcharging and preserves the stored energy's purity.
Purdue researchers have created a 2D array of electron and nuclear spin qubits, enabling atomic-scale nuclear magnetic resonance spectroscopy and reading/writing quantum information with nuclear spins in 2D materials. This method harnesses three nitrogen nuclei at a time for longer coherence times than electron qubits.
Scientists have successfully implemented the world's fastest two-qubit gate in a quantum computer, achieving an impressive speed of 6.5 nanoseconds using cold atoms cooled to near absolute zero and optical tweezers. This breakthrough has significant implications for the development of ultrafast quantum computing hardware.
Researchers optimized the ZZ SWAP network protocol, introducing a new technique to improve quantum error mitigation. This enables more efficient execution of quantum algorithms like QAOA, which can solve combinatorial optimization problems.
Researchers at the University of Innsbruck developed a quantum computer that can perform arbitrary calculations using quantum digits (qudits), exceeding classical computers' efficiency. This innovation unlocks more computational power with fewer quantum particles.
Scientists at Simon Fraser University have made a breakthrough in developing quantum technology by observing over 150,000 silicon 'T centre' photon-spin qubits. This discovery enables the creation of massively scalable quantum computers and quantum internet that can connect them.