Articles tagged with Quantum Memory
Researchers investigated the role of memory in quantum systems and dynamics, discovering a process can appear memoryless from one view while retaining memory from another. The study clarifies a fundamental aspect of quantum dynamics and highlights the uniquely quantum nature of time evolution.
A team of researchers at Tohoku University has successfully created and electrically controlled triple quantum dots in zinc oxide (ZnO), a promising material for quantum computing. This breakthrough opens a new pathway to exploring complex quantum behaviors and developing potential architectures for quantum computation.
A new international project aims to protect fragile quantum information from decoherence and loss, a key barrier to quantum computing's progression. The Magenium qubit design stores information in small, symmetric clusters of qubits, potentially allowing quantum data to last significantly longer than current methods.
A team of researchers from ICFO has achieved a major milestone in the development of solid-state quantum memories. They have successfully stored qubits in arbitrary combinations of memory cells and retrieved them on demand using an array of ten individually-controllable memories. This achievement opens up new possibilities for processi...
Researchers successfully realized a stable, isolated quantum spin on an insulating magnesium oxide surface placed over a ferromagnetic iron substrate. The MgO/Fe(001) structure, widely used in spintronics, enables the formation of isolated spins due to its lack of conduction electrons.
Researchers at Caltech have created a hybrid approach for storing quantum states by translating electrical information into sound waves. This method allows quantum states from superconducting qubits to survive in storage for an extended period.
Fraunhofer Institute for Applied Solid State Physics launches first room-temperature quantum accelerator, enabling energy-efficient hybrid quantum-classical computing. The QB-QDK2.0 system uses synthetic diamond substrates and NV centers to create stable qubits for industrial applications.
Researchers have developed a new type of exotic quantum material that can maintain its quantum properties when exposed to external disturbances, paving the way for robust quantum computers. The breakthrough uses magnetism to create stability, making it an important step towards realising practical topological quantum computing.
Researchers at Lancaster University are developing high-performance memory devices using self-assembled molecular technology to overcome the von Neumann bottleneck in computing. The Memristive Organometallic Devices (MemOD) project aims to deliver faster, more stable, and energy-efficient AI hardware.
Research team develops novel method to exploit frictionless sliding for improved memory performance and energy efficiency. The new technology enables unprecedentedly efficient data read/write operations while consuming significantly less energy.
Scientists have successfully demonstrated an integrated spin-wave quantum memory, enabling on-demand retrieval with adjustable storage times. The device outperforms previous methods, achieving a fidelity of 94.9% in storing and retrieving single-photon-level inputs.
Dr Florian Kaiser leads €3 million ERC Consolidator Grant-funded research on quantum integration, aiming to create practical applications and overcome scalability challenges in quantum technologies. The goal is to integrate quantum processors and memories on a single chip, enabling superior performance and minimal energy consumption.
Researchers successfully visualized tiny magnetic regions, known as magnetic domains, in a specialized quantum material using nonreciprocal directional dichroism. They also manipulated these regions by applying an electric field, offering new insights into the complex behavior of magnetic materials at the quantum level.
A team of researchers at Argonne National Laboratory has proposed a new type of optical memory that uses quantum defects to store data. By embedding rare-earth emitters in a solid material and transferring energy between them, the researchers aim to create an ultra-high-density storage method that could potentially exceed current limits.
Researchers at the University of Chicago have discovered a new material, MnBi2Te4, that can store and access computational data using light. The material's magnetic properties change quickly and easily in response to light, making it suitable for optical storage devices.
A team of researchers has demonstrated a novel way of storing and releasing X-ray pulses at the single photon level, enabling future X-ray quantum technologies. This breakthrough uses nuclear ensembles to create long-lived quantum memories with improved coherence times.
Researchers at Washington University in St. Louis have developed a new technique to enhance quantum entanglement stability in qubits. This breakthrough addresses the challenges of maintaining coherence and reliability in quantum systems.
Researchers at Harvard University have successfully demonstrated the first metro-area quantum computer network in Boston, using existing telecommunication fiber to send hacker-proof information via photons. The breakthrough overcomes signal loss issues, enabling the creation of a secure quantum internet.
For the first time, scientists have created a system that interfaces two key components of quantum networks: quantum information creation and storage. The team used regular optical fibres to transmit quantum data, enabling long-distance communication and paving the way for distributed computing and secure communication.
Scientists create a small drum that stores data sent with light in its sonic vibrations, allowing for secure transmission over long distances. This innovation has the potential to revolutionize quantum computing and enable an internet with quantum speed and security.
Researchers visualize chiral interface state at atomic scale for the first time, allowing on-demand creation of conducting channels. The technique has promise for building tunable networks of electron channels and advancing quantum computing.
Physicists at the University of Colorado Boulder have discovered a way to create scenarios where information can remain stable in quantum computer chips, potentially leading to advances in quantum computing. The team's findings could also influence other fields, such as materials science and engineering.
Scientists at the University of Basel developed a miniaturized quantum memory that can store photons in tiny glass cells. The innovation enables the mass production of quantum memories, paving the way for future quantum networks and secure communication.
Researchers at Purdue University propose using vanadium oxides to create neuromorphic computing hardware that mimics brain behavior. This breakthrough aims to improve energy efficiency and computational performance in AI systems.
Researchers from Kyoto University have demonstrated the thermal quantum Mpemba effect in a wide range of initial conditions, where hotter quantum systems cool faster than initially colder ones. The team used a quantum dot connected to a heat bath and observed anomalous thermal relaxation at later times.
The UW students' achievement enables the implementation of a fractional Fourier Transform in optical pulses, allowing for more precise pulse identification and filtering. This innovation has significant implications for spectroscopy and telecommunications, where precise signal processing is crucial.
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 at UIUC have conducted the first variance-based sensitivity analysis of Lambda-type quantum memory devices, considering effects of random device noise and slow experimental drift. The study informs experimental design and enables others to perform similar analyses.
A new device developed by quantum engineers can measure the spins in materials with high precision, breaking the current record of thousands of spins. This breakthrough enables researchers to study systems that were previously inaccessible, such as microscopic samples and two-dimensional materials.
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.
Scientists have created a new class of nonvolatile memory devices using antiferromagnets that can store stable memory states and read them incredibly quickly. This breakthrough could lead to faster memory devices with performance beyond the terahertz regime.
Researchers demonstrated high-visibility quantum interference between two independent semiconductor quantum dots, an important step toward scalable quantum networks. The observed interference visibility is up to 93%, paving the way for solid-state quantum networks with distances over 300 km.
Researchers at the University of Science and Technology of China have developed a method to store high-dimensional orbital angular momentum quantum states for an extended period. The team used a guiding magnetic field combined with clock state preparation to achieve a storage time of up to 400μs, surpassing previous records.
Scientists at Tel Aviv University have developed a method to create the thinnest possible ladder steps made of distinct electric potentials, which can be used as independent information units. The discovery enables the creation of novel devices with potential applications in electronics and optomechanics.
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.
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.
Researchers have found a way to precisely control qubits without previous limitations, enabling large-scale quantum processors and quantum memories. The new method combines optical methods with microwaves to overcome wiring issues, paving the way for quantum computing advancement.
Researchers have demonstrated a significant improvement in fibre-integrated quantum memories, achieving an entanglement storage time of over 1000 microseconds. The fully integrated device enables the use of sophisticated control systems, allowing for improved scalability and compatibility with telecommunications infrastructure.
A research team from Yokohama National University demonstrates quantum error correction in spin quantum memories in diamond under a zero magnetic field. This achievement makes the quantum memory resilient against operational or environmental errors without the need for magnetic fields.
The researchers successfully synthesized π-extended nanographene carbon nanosolenoid (CNS) material with continuous spiral graphene planes, matching the structure of Riemann surface. CNS exhibited special photoluminescence and magnetic properties, including red-shifted emission band and large thermal hysteresis.
A UNIGE team has successfully stored a quantum bit for 20 milliseconds in a crystal-based memory. This achievement marks a major step towards the development of long-distance quantum telecommunications networks.
Researchers at Caltech developed a novel approach for quantum storage using nuclear spins, which can effectively chain up several atoms to store information. The system utilizes ytterbium ions and surrounding vanadium atoms to create a reliable quantum memory.
Researchers at TU Delft and UNICAMP successfully teleported the quantum state of a single photon to an optomechanical device containing billions of atoms. This achievement paves the way for creating signal repeaters in a future quantum internet, enabling long-distance quantum communication.
Scientists at the University of Tokyo have created a novel machine learning algorithm that allows for efficient and accurate verification of time-dependent quantum devices. The algorithm, inspired by quantum reservoir computing, leverages memory effects in these systems to improve verification efficiency.
Academician GUO Guangcan's team demonstrates measurement-dependent property of quantum memory effects, proving non-Markovianity in multi-step evolution. This study has implications for approximating quantum processes with memory.
Researchers at USTC develop a multiplexed quantum repeater using absorptive quantum memories, achieving high-fidelity entanglement swapping and accelerating entanglement distribution. This breakthrough provides a feasible roadmap for practical quantum repeaters and high-speed quantum networks.
Researchers achieved scalable, telecom-heralded matter-matter entanglement between two remote, multimode and solid-state quantum memories, stored in different labs separated by 10 meters. This landmark experiment paves the way for long-distance quantum communication and operation of quantum repeaters.
Researchers developed a non-Markov chain algorithm in a 2D mica-based RRAM device, exhibiting high on/off ratio and retention time. The device utilizes controllable ion transport to realize a multi-path non-Markov chain.
Researchers from USTC extended optical memory storage time to over one hour using ZEFOZ-AFC method and dynamical decoupling, achieving high storage capacity and fidelity. The study meets basic requirements for optical storage lifetime in quantum memories.
Researchers at Max Planck Institute of Quantum Optics successfully interconnected two qubits over a 60-meter distance, enabling the first prototype of a distributed quantum computer. The breakthrough opens up a new development path for distributed quantum computing, potentially leading to more powerful systems.
A researcher at Hiroshima University has proposed a method to test the precision of measurements in quantum systems. By using a qubit as an external probe, he demonstrates that different measurements can accurately determine the same physical property before measurement, even when values change based on the procedure.
The researchers propose creating quantum bits by implanting magnetic atoms into a crystal lattice, enabling faster and more defined qubits. This design concept addresses the stability issue of traditional quantum computers, making them less error-prone and up to ten times faster.
The study demonstrates how to harness quantum entanglement to reduce energy fluctuations and enhance the readout of information from digital memories. This breakthrough has potential applications in large databases, next-generation computers, spectroscopy, and bio-imaging.
A team of physicists successfully transported light stored in a cloud of ultra-cold rubidium-87 atoms over 1.2 millimeters using an optical conveyor belt. The controlled transport process has minimal impact on the stored light's properties, enabling potential applications in quantum communication and computing.
Researchers at Yokohama National University developed a new method to produce entangled photons compatible with quantum memories, allowing for long-distance quantum communication through optical fibers. This breakthrough could enable the creation of a quantum internet linking quantum computers.
A team of engineers has created hardware that can learn skills using a type of AI that currently runs on software platforms. The hardware, made of a quantum material, is capable of learning numbers and demonstrates artificial tree-like memory at room temperature.
Researchers developed a micro-capillary injector that accelerates nanometer-scale structure fabrication using a supersonic jet of inert gas. The technique allows for rapid production of structures with high aspect ratios, suitable for applications in magnetic memory and quantum communication devices.
Researchers at TUM and Max Planck Institute discovered quasiparticles that don't decay, but instead oscillate between decay and rebirth. This phenomenon explains unusual stability in materials like magnetic compounds and superfluid helium.
A team of researchers led by Prof. DU Shengwang from HKUST achieved a breakthrough in photonic quantum memories, boosting efficiency to over 85% and fidelity to over 99%. This finding brings the dream of an 'universal' quantum computer closer to reality.
A team of Cambridge researchers controlled the sea of nuclei in semiconductor quantum dots, enabling them to operate as a quantum memory device. This achievement harnesses the interaction between electrons and nuclear spins, proving the nuclei can exchange information with an electron qubit.