Articles tagged with Quantum Information Science
A Japanese research team investigates the origin of Bi2212's strong optical anisotropy, finding that increasing lead content reduces incommensurate modulation, enabling accurate measurement of optical activity and circular dichroism. This study contributes to understanding high-temperature superconductivity mechanisms.
Researchers at Rice University have uncovered a phenomenon where quasiparticles lose their identity in extreme quantum materials, leading to unique properties. This discovery has broader implications for understanding transitions in other correlated materials and creating advanced superconductors.
Researchers from Linköping University confirmed a direct connection between quantum theory and information theory, revealing the degree of unknown information in a quantum system. The study used a new experimental setup to demonstrate the equivalence of entropic uncertainty with wave-particle duality.
Researchers used a superconducting quantum processor to study quantum transport in unprecedented detail. The experiments explored how a spin/particle current flows between two groups of qubits, revealing a unified picture of thermalisation dynamics and nonequilibrium steady dynamics.
Researchers use quantum information science to study the influence of entanglement on proton structure, revealing a more complex and dynamic system. The findings may offer insight into nuclear physics questions and inform future experiments at the Electron-Ion Collider.
Researchers at Heriot-Watt University have proposed a new method to filter out daylight noise from quantum signals, enabling all-day satellite transmission. The approach uses time and phase encoding to overcome the issue, allowing SatQKD to operate during dawn and dusk hours.
Theoretical physicists establish a close connection between quantum information theory and non-invertible symmetries in particle and condensed matter theories. A recent study proves that any non-invertible symmetry operation is a quantum operation, providing a general property of these operations.
The Karlsruhe Institute of Technology is joining the Quantum Science and Technology Centre (IQST) to strengthen research in quantum science and technology in Baden-Württemberg. The centre focuses on innovative applications of quantum science, including sensor technology and secure communication channels.
Seven NRL researchers received LUCI fellowships for innovative projects in materials science, including Adam Dunkelberger's work on anisotropic materials and John Lyons' research on infrared tin-germanium alloys. The fellowships support collaborative efforts between academia and the DoD to advance basic research priorities.
Researchers identify a quantum mechanism as key to accelerating ocean temperatures, which current climate models fail to predict. The study proposes a new paradigm that factors in non-thermal energy, suggesting a revised approach to understanding ocean thermal stability and climate change.
The São Paulo Advanced School on Disordered Systems will bring together students and researchers in complexity, bio-inspired applications, information science, and quantum materials. The school, supported by FAPESP, aims to establish a common forum for learning and discussing theories of general interest.
A team of researchers developed a new technique combining methods to simulate molecules, achieving accuracy and efficiency on the Frontier exascale supercomputer. They broke records with simulations of over one million electrons and scaled their algorithm to an EFlop/s processing quintillion calculations per second.
A team led by Associate Professor Giuseppe Barca has developed software capable of accurately predicting molecular behavior and setting a new benchmark in computational chemistry. This breakthrough enables scientists to simulate drug performance with accuracy rivaling physical experiments, accelerating new therapeutics design.
The new QDlight laboratory aims to develop emitters and protocols for generating new quantum states of light, creating a fault-tolerant photonic quantum computer. The collaboration combines academic and technological expertise to overcome scientific obstacles in quantum photonics.
Industry and academic experts discuss the potential of new materials, configurations, and integration technologies to overcome bandwidth limitations and operational robustness issues in silicon photonic modulators. These advancements are expected to impact emerging applications such as data centers, AI, quantum information processing, ...
The Department of Energy's Quantum Computing User Program is releasing a Request for Information to gather input on current and upcoming availability of quantum computing resources. The program aims to understand the readiness of these resources for quantum computing research and engage with the diversity of stakeholders in the field.
A team of scientists has identified key sources of radiation that can interfere with superconducting qubits, leading to errors in quantum computing. By developing effective shielding measures, they aim to improve coherence times and pave the way for practical quantum computing.
Researchers have discovered a new phenomenon in quantum-driven superconductors that could lead to more precise control of driven quantum systems. The study, led by IU Professor Babak Seradjeh, explores the role of Floquet Majorana fermions in the Josephson effect and their potential for developing stable quantum computers.
Nanomechanical resonators have been used to sense minuscule forces and mass changes. The new aluminum nitride resonator achieved a quality factor of over 10 million, opening doors to new possibilities in quantum sensing technologies.
Researchers developed a novel AI approach to predict atomic-level chemical bonding information in 3D space, bypassing traditional supercomputer simulations. This methodology accelerates calculations by learning chemical bonding information using neural network algorithms from computer vision.
Researchers at NCSA have presented a novel post-quantum cryptography network instrument to measure PQC adoption rates and ensure secure data safeguarding. The project's findings indicate that only OpenSSH and Google Chrome have successfully implemented PQC, achieving an initial adoption rate of 0.029%.
A NRL multi-disciplinary team developed a nonvolatile and reversible procedure to control single photon emission purity in monolayer tungsten disulfide by integrating it with a ferroelectric material. This novel heterostructure introduces a new paradigm for control of quantum emitters.
The new issue of Optica Quantum features 10 research articles on quantum information science and technology. New methods for compensating scattering and aberrations in entangled photon systems have been proposed, and ultrafast nonlinear wave mixing spectroscopy schemes employing coherent light pulses and vacuum modes are being explored.
Researchers developed a technique to generate synthetic electromagnetic fields on superconducting quantum processors, enabling the exploration of material properties. The technique allows scientists to probe complex phenomena in materials, shedding light on key features such as conductivity and magnetization.
Professor Qi Zhao, a HKU researcher, has been selected as one of the 35 Innovators Under 35 for the Asia Pacific Region 2024 by MIT Technology Review. He is recognized for his innovative research in quantum computing and quantum information, including efficient entanglement detection tools and novel simulation algorithms.
Researchers used a classical computer and mathematical models to outperform a quantum computer on a task involving a two-dimensional quantum system of flipping magnets. The system displayed a behavior known as confinement, which had previously been seen only in one-dimensional systems.
A new training algorithm called ternarized gradient BNN (TGBNN) enables learning capabilities for binarized neural networks (BNNs) on IoT edge devices. The proposed MRAM-based CiM architecture achieves faster convergence and matching accuracy with regular BNNs.
The SPINNING project successfully demonstrated the entanglement of two registers of six qubits each over 20m distance with high fidelity. The spin-photon-based quantum computer achieved lower error rates than superconducting Josephson junctions, outperforming prominent models like Eagle and Heron.
EPFL researchers have developed correlated vibrational spectroscopy (CVS) to measure the behavior of water molecules participating in hydrogen bonds. The method allows for direct measurement of electronic charge sharing and H-bond strength, enabling precise characterization of molecular-level details in various materials.
Scientists at Paderborn University used high-performance computing to analyse a quantum photonics experiment, performing calculations in just minutes. The findings have significant implications for characterising photonic quantum computer hardware and will shape the future of quantum research.
Researchers developed a quantum lidar system using up-conversion detector technology to record optical signals over a wide bandwidth. The system achieved wind field detection at a distance of 16 km with improved sensitivity and consistency compared to traditional lidar systems.
A team of researchers has discovered a way to manipulate quantum states of light using a synthetic photonic lattice capable of generating and manipulating quantum states in a simple yet powerful way. This breakthrough could lead to advanced quantum computing, secure quantum communications, and other applications.
A new benchmark, V-score, has been developed to tackle quantum many-body problems. The V-score combines energy and fluctuation data into a single number, making it easier to rank different methods based on accuracy.
Researchers at KAIST have developed a Janus metasurface capable of controlling asymmetric light transmission, enabling the creation of two independent optical systems with a single device. This technology also enables optical encryption by generating different images depending on the direction and polarization state of incoming light.
Researchers at NICT and partners developed a new type of superconducting flux qubit that can operate optimally in zero magnetic field. The qubit boasts a coherence time of 1.45 microseconds, marking a significant improvement over previous designs.
A team of scientists successfully implement coherent population trapping (CPT) in a double quantum dot (DQD) system without an external driving field. The researchers observed a significant dip in leakage current at zero bias, indicating the formation of dark states and CPT.
Recent breakthroughs in microcomb design and control enable novel applications in classical and quantum information, including signal generation, spectroscopy, and medical imaging. Microcombs hold promise for transforming various scientific and industrial sectors through precise light and information control.
A new technique, RODAS, combines imaging and spectroscopy to capture fleeting atomic structures, providing unprecedented insights into material properties. This allows for rapid analysis without destroying the sample, enabling the study of defects and their influence on material behavior.
Researchers at the University of Copenhagen's Quantum for Life Centre have developed a new mathematical recipe to make quantum simulators more scalable and efficient. This breakthrough could speed up the development of new medicines from years to months by predicting how molecules behave in the human body before laboratory trials.
Karen Jo Matsler, a UTA professor, is being honored for her extensive contributions to physics education and her efforts to support educators nationwide. Her Quantum for All initiative aims to integrate quantum concepts into high school science instruction, preparing students for careers in quantum technology.
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 developed boron nitride nanotubes with spin qubits, more sensitive to off-axis magnetic fields than diamond tips. The technology has applications in quantum sensing, semiconductor industry, and nanoscale MRI.
Researchers induced fast switching between electrically neutral and charged luminescent particles in an ultra-thin, two-dimensional material. The result opens up new perspectives for optical data processing and flexible detectors.
A recent study has lifted the veil of topological censorship by revealing a meandering conduction channel that can carry quantized bulk current. The researchers identified mechanisms that allow for tuning between qualitatively different microscopic implementations, challenging traditional theories.
Scientists from Brookhaven National Laboratory have developed a new type of qubit that can be easily manufactured without sacrificing performance. The constriction junction architecture offers a simpler alternative to traditional SIS junctions, using a thin superconducting wire instead of an insulating layer.
Researchers Gavin Cornwell, Sneha Couvillion, and Bo Peng will study bioparticles, soil microbes, and their impact on climate models. They aim to improve representations of ice nucleating particles and understand lipid exchange in soil ecosystems.
Researchers developed hybrid single-photon cameras for high-dimensional spatial correlations, enabling faster measurements of quantum optical phenomena. They also reconstructed photon number distributions in microresonators to characterize their performance without specialized detectors.
Researchers have developed a new multi-functional device that enables simultaneous optical, microwave, and strain control of multiple solid-state color centers. The device is promising for advancing the scalability of solid-state color centers in larger quantum computers and networks.
Researchers from NUS successfully simulated higher-order topological lattices with unprecedented accuracy, unlocking new potential in quantum computers. The study enables the exploration of high-dimensional topological materials and their unique properties.
Scientists at Aalto University and Institute of Physics CAS built an artificial quantum material with topological quantum magnetism, featuring a new state of matter. The researchers demonstrated the highest-order topological quantum magnet, which could provide substantial protection against decoherence in quantum technology.
A research team from USTC successfully demonstrated Hardy's nonlocality while closing both detection efficiency and locality loophoes. The study confirms quantum nonlocality via a strong violation of Hardy's paradox, with implications for developing quantum technologies.
Researchers from UCLA's California NanoSystems Institute and their colleagues have received a $1 million grant to develop quantum sensors with unprecedented precision. The grant will enable the creation of cutting-edge quantum technologies for various applications, including navigation, telecommunications, and medicine.
Scientists have created an ultra-thin light source emitting pairs of polarization-entangled photons, enabling ultra-secure communication and powerful computation. The breakthrough material, 3R-WS2, facilitates the search for superior quantum materials, bringing quantum technology closer to reality.
Researchers developed a new superconductor material that uses a delocalized state of an electron to carry quantum information. The material could be used to create low-loss microwave resonators for quantum computing, which is critical for reducing decoherence and increasing the stability of qubits.
An international team has discovered 3D quantum spin liquids in Nickel Langbeinites, a new class of materials. The discovery was made using neutron experiments and theoretical modelling, which revealed an island of liquidity at the centre of a strongly frustrated lattice.
Researchers create stable, multilayer structures using electric field modifications, opening up new possibilities for quantum technologies. The development paves the way for scalable and robust quantum devices with increased functionality.
Researchers at PolyU have successfully developed a quantum microprocessor chip that can simulate large-structured and complex molecules with high accuracy. The breakthrough enables scientists to tackle complicated quantum chemistry problems beyond the capabilities of classical computers.
Researchers develop a modular approach to scaling quantum processors using semiconductor technology and long-distance entangling links. This enables the creation of small arrays of qubits that can be connected to form larger systems, overcoming challenges in controlling individual qubits and maintaining coherence.
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 scientists has successfully established the first intercity quantum key distribution experiment using semiconductor quantum dots as single-photon sources. This breakthrough enables fast and stable transmission of secret keys over long distances, paving the way for a secure 'quantum internet'.