Articles tagged with Quantum Memory
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.
ORNL's automated plutonium-238 production increased annual output from 50g to 400g, moving closer to NASA's goal of 1.5kg/year by 2025. The lab also developed a novel cryogenic memory cell design that may boost storage while using less energy in future computing applications.
Researchers at UAlberta developed a new technique for storing quantum information in ultracold rubidium atoms, enabling efficient quantum communication and scalable technologies. The novel method uses clouds of atoms to store pulses of light, with significantly reduced technical requirements.
The team developed a multi-degree-of-freedom multiplexed solid-state quantum memory with high multimode capacity and demonstrated photon pulse operation functions with time and frequency DOFs. The device enables coherent manipulation of quantum states and can serve as a quantum mode converter with high fidelity.
Researchers at UNIGE have discovered ytterbium, a rare earth element that can store and protect quantum information even at high frequencies. The material's properties make it an ideal candidate for future quantum networks, where the aim is to propagate signals over long distances by acting as repeaters.
Researchers have demonstrated the first single-photon transistor using a semiconductor chip, paving the way for photon-based computing. The device can process 10 billion photonic qubits per second and is compact enough to fit inside a grain of salt.
Harvard researchers engineered diamond strings that can quiet a qubit's environment and improve memory from tens to several hundred nanoseconds, enough time for many operations on a quantum chip. This breakthrough could serve as the backbone of a future quantum internet.
Scientists at University of Southern Denmark create photonic quantum memory allowing manipulation of light on nonlinear level. They successfully demonstrate novel method to subtract a single photon from an optical beam, enabling future applications in quantum information science.
Researchers from Kazan Federal University and Kazan Quantum Center have developed a multiresonator broadband quantum memory-interface with a record-breaking 16.3% efficiency at room temperature. The innovation has the potential to create universal memory solutions for quantum computers on superconducting qubits.
Researchers propose storing time in a quantum superposition to reduce memory requirements for classical computer simulations. This allows for more efficient modeling of processes like traffic flow and neural firing without sacrificing predictive accuracy.
Researchers from Innsbruck and Vienna teams used artificial intelligence to design new quantum experiments, leveraging a projective simulation model and reinforcement learning. The AI-agent performed tens of thousands of experiments, discovering novel structures that could be tested in the lab.
Researchers at University of Warsaw develop high-capacity quantum memory, storing up to 665 quantum states of light, using spatial multiplexing and magneto-optical trap. The system is resilient to decoherence, enabling complex manipulations of atomic states.
Physicists at the University of Innsbruck have developed a technique to transfer quantum information between systems encoded differently, enabling local modification of quantum bits. This 'data bus' approach allows for more robust coupling between quantum processors and memories, paving the way for universal quantum computing.
Researchers at The Australian National University have developed a groundbreaking material that enables a global quantum internet by storing quantum information in an erbium-doped crystal for more than a second, significantly longer than previous attempts. This breakthrough aims to unlock the full potential of future quantum computers.
A team of Caltech engineers has developed the world's smallest optical quantum memory chip, capable of storing information in individual photons. The device stores data more efficiently and securely than traditional computer memory, with 97% accuracy rate.
Physicists from University of Basel create a simple and fast quantum memory that stores photons, enabling ultra-fast data transfer and potentially leading to unconditionally secure communication and super-fast quantum computers. The technology has low noise levels and can be implemented in compact setups.
Scientists at IBS conceptualized an ideal material that could store data for an exceptionally long time, bringing new hints for future quantum memory technologies. The material has a special architecture of energy levels for its electrons, enabling exponentially longer storage than current devices.
Researchers created a quantum dot transistor that can store and process information directly in memory. The device simulates the functions of neurons by using light to control electrical charging and discharging of quantum dots.
Scientists demonstrate novel protocol using crystals to emit and store quantum light for extended distances, paving the way for a future quantum repeater. This breakthrough enables secure communication over longer ranges by harnessing the properties of quantum superposition.
Researchers use Scanning Tunneling Microscope to store and read information in individual holmium atoms, achieving unprecedented miniaturization of storage media. The discovery could revolutionize quantum computing and pave the way for high-density data storage.
The researchers created systems capable of emulating certain properties exclusive of living entities, including natural selection, memory and intelligence. They developed mechanisms for natural selection, memory and learning processes that can be used to automate processes on a quantum scale.
A team of physicists at the University of Warsaw has created a multidimensional entangled state of a single photon and a trillion rubidium atoms. By storing the photons in the laboratory for several microseconds, they have demonstrated the joint entanglement, resolving the long-standing paradox of Einstein-Podolsky-Rosen.
Physicists from the University of Warsaw develop a new device that generates large groups of single photons on demand, overcoming a fundamental obstacle towards quantum computing. The device uses a spatially multimode memory and can store and process hundreds of photons in microseconds.
Researchers develop quantum RAM that models complex problems with unprecedented amounts of data, using a 'quantum hard drive' smaller than conventional simulations require. This breakthrough achieves significant improvements in efficiency, paving the way for advancements in complex simulations and real-world applications.
Scientists at Kazan University developed a new principle of optical storage based on tip-enhanced Raman scattering effect to overcome the diffraction limit. The new technology enables up to 1 Pb/dm2 storage capacity, approximately equal to 1 million standard DVDs.
Researchers at Vienna University of Technology developed a new method to create durable quantum states in nitrogen atoms and microwaves, increasing the lifetime of quantum memory by more than an order of magnitude. This breakthrough enables important quantum-technological applications with faster data processing times.
Researchers have created memory cells using superconductors, enabling read and write operations to take only a few hundred picoseconds. The proposed system encodes data in the value of superconducting current, allowing for fast switching between states.
A quantum system's configurations oscillate endlessly without relaxation, unlike classical physics where equilibrium is the norm. Researchers discovered that these systems are extremely robust and exist on a discrete grid, influencing non-local effects.
The team constructed tiny mirrors to trap light around impurity atoms in diamond crystals, increasing the efficiency of photon transmission. They demonstrated a spin-coherence time of over 200 microseconds, essential for quantum computing systems and long-range cryptographic networks.
A breakthrough in atomic memory technology allows for reliable quantum information storage and transmission over long distances. The device can store light with multiple spatial modes, enabling higher capacity and paving the way for widespread adoption of quantum communications.
Researchers from St. Petersburg State University developed a theoretical model for quantum memory in light, adapting classical hologram concepts to a quantum system. They demonstrated the possibility of retrieving specific portions of stored quantized light signals with precise control over space and time.
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.
This special issue of Science China-Physics, Mechanics & Astronomy features a wide range of research articles covering surface symmetry, qubits, graphene, and more. The articles highlight the Institute of Physics CAS's achievements over the past five years.
A new method for designing quantum memory has been developed, enabling long-term storage of quantum states with low error rates. This breakthrough could revolutionize information processing and solve complex problems in fields like materials science and physics.
Researchers at NIST and the University of Maryland have developed an optical memory device using a cloud of rubidium atoms, enabling the storage of simple images. The breakthrough demonstrates spatially addressable readout and erasure of an image in the vapor, paving the way for quantum computing applications.
Researchers at NIST have successfully demonstrated the use of a mechanical micro-drum as a quantum memory, storing and retrieving information with 65% efficiency. This innovation exploits a mechanical form of quantum physics and has potential applications in quantum computing and precise force sensing.
Researchers at Vienna University of Technology have discovered an intermediate state between order and disorder in ultra cold Bose-Einstein condensates. This prethermalized state retains quantum memory for a surprisingly long time, characterized by a new length scale that emerges from the initial quantum gas.
Using synthetic diamond, researchers achieved a record-breaking memory time of over one second at room temperature, surpassing previous materials that required cryogenic cooling. This breakthrough opens up potential for novel solid-state quantum sensors and quantum information processing applications.
Researchers at Joint Quantum Institute store and replay two separate images, a feat of cinematography, using a room-temperature vapor of atoms. The new storage process has great promise for quantum information and may lead to the development of a random access memory for continuous variable quantum information.
Researchers discovered a new way for quantum computers to simulate stochastic processes, which are used to model phenomena like stock market movements and gas diffusion. This finding suggests that quantum theory might not yet be optimized, leaving room for further exploration of a deeper theory.
A five-year MURI project will investigate three physical platforms for designing matter-light interaction used to generate entangled photons. The team aims to create large-scale systems that use entanglement for quantum communication and computing.
Researchers at Max Planck Institute of Quantum Optics successfully stored quantum information in a single atom, overcoming previous challenges in photon-atom interactions. The technique uses a rubidium atom to store the quantum state of photons, enabling potential applications in powerful quantum computers and networks.
Researchers at University of Innsbruck have developed a novel architecture for quantum computation, enabling the exchange of quantum information between two separate memory cells on a computer chip. The new technology amplifies transmission and offers possibilities to distribute entanglement, targeting individual memory cells.
Researchers at the University of Calgary have made a significant breakthrough in creating quantum networks by storing information in entangled photons. This achievement brings the field closer to reality and has the potential to enable building quantum networks in a few years.
Researchers at Caltech have demonstrated quantum entanglement for a four-part quantum state stored in four spatially distinct atomic memories. The team successfully created quadripartite entanglement by entangling the spin waves among four collections of Cesium atoms, which were then transferred to four beams of light.
Physicists at Georgia Tech have developed a critical component of a quantum repeater, allowing for secure encryption key transmission over longer distances. The new technology enables the relay of entangled particles over 1,000 kilometers, significantly improving the security of quantum cryptography.
Researchers from LMU and ETH Zurich have shown that position and momentum can be predicted more precisely than Heisenberg's Uncertainty Principle allows, using a quantum memory. This breakthrough enhances our understanding of quantum memories and provides a method for determining entanglement.
Researchers at MIT create a quantum memory that heralds successful storage of light beams in ultra-cold atom gases, enabling scalable quantum networking. In Brazil, scientists control the formation of quantum turbulence in an ultra-cold atom gas using magnetic fields.
Researchers are investigating whether mathematical similarities between word associations and quantum theory could lead to new models of how humans process words and meaning. The study aims to gain an understanding of the intriguing connections between cognitive science and quantum theory.
Researchers at Georgia Tech establish a new record for quantum information storage and retrieval lifetime, advancing quantum networking. The record-breaking 7-millisecond storage time enables the transmission of data across a thousand kilometers on an optical network.
Carbon nanotubes are used to create a non-volatile memory cell with high speed and low power consumption. The new technology combines the benefits of dynamic and flash memories, overcoming fundamental limits of current memory technologies.
Researchers harnessing 'funky effects' of quantum theory for more precise measurements, efficient memory chips and accurate clocks. Quantum principles enable advancements in areas like pattern recognition and time-of-arrival measurement, potentially transforming industries.
Researchers have discovered a way to manipulate individual carbon-13 atoms in diamond to create stable quantum mechanical memory and a small quantum processor operating at room temperature. This breakthrough brings solid-state materials into the realm of quantum computing, revolutionizing scientists' approach to the technology.
Researchers at Georgia Institute of Technology have successfully stored and retrieved single photons between remote quantum memories composed of rubidium atoms. This breakthrough demonstrates the storage of light-based information in matter, a necessary step for transmitting quantum information long distances through optical fibers.
NIST demonstrates improved quantum memory capabilities, enabling qubits to maintain superpositions over 1 million times longer. This advance significantly reduces the computing resources needed to correct memory errors in fault-tolerant quantum computers.
Shiffrin's work has evolved over 35 years, developing Bayesian approaches to model human memory, attention, and learning. His theories have been widely recognized with numerous awards and publications.