Articles tagged with Quantum Computing
Researchers demonstrate probabilistic computing's capabilities by simulating networks of stochastic nanodevices to solve specific NP problems. The simulations agree with theoretical solutions, indicating the potential for scaling up this approach.
Researchers have developed a new germanium-tin transistor that exhibits improved electronic properties compared to silicon-based transistors. The material combines the benefits of germanium and tin, resulting in enhanced performance at low temperatures.
Researchers reconstructed the full state of a quantum liquid using ultracold atoms, offering insights into quantum systems' fluctuations and behavior. This breakthrough has promise for quantum computing, sensing technology, and better characterization of quantum systems.
The researchers developed a method to create ultracompact photonic crystal cavities that can generate entangled photons. The discovery is crucial for the development of quantum computing and sensing applications. By controlling the cavity's properties, they can efficiently convert pump power into coherent light.
The team successfully entangled two qudits with unprecedented performance, enabling faster and more robust quantum computing. This breakthrough could lead to significant advancements in fields like chemistry and physics.
Researchers investigated Hardy nonlocality using quantum computers, discovering increased success probability as the number of particles grows. This challenges classical theories and has implications for quantum mechanics and communications.
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 have derived a formula predicting the effects of environmental noise on quantum computing. By incorporating redundancy in quantum messages, scientists can now quantify how much redundancy is needed to protect against dephasing noise.
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.
A team of researchers has created a mixed magnon state in an organic hybrid perovskite material by harnessing the Dzyaloshinskii–Moriya-Interaction. This allows for magnon-magnon coupling, which is crucial for processing and storing quantum computing information. The work expands the number of potential materials for creating hybrid ma...
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.
Researchers at the University of Sydney and the University of Basel have demonstrated the ability to manipulate and identify small numbers of interacting photons with high correlation. This achievement represents a significant step towards advancing medical imaging and quantum computing technologies.
Researchers have developed a new concept for superconducting microwave low-noise amplifiers with significantly lower power consumption. The SIS amplifier has been successfully demonstrated with high-performance gain below 5 GHz and comparable noise temperature to cooled semiconductor amplifiers, with potential applications in radio ast...
Scientists at EPFL and IBM have developed a new type of laser using lithium niobate, enabling precise distance measurements in LiDAR applications. The hybrid integrated tunable laser offers low frequency noise and fast wavelength tuning.
Researchers developed an algorithm using quantum computing to study amine reactions and find new compounds for carbon capture. The algorithm can quickly screen thousands of molecules and structures, vital for practical applications in fields like carbon capture.
Scientists have made a groundbreaking discovery in quantum computing, enabling the creation of an experimental wormhole. The 'counterportation' approach harnesses basic laws of physics to transport small objects across space without particles crossing.
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 in Japan used a synchrotron to create gamma rays that revealed unusual fluctuations in the electrical charge of a strange metal alloy. The study provides insight into the inner machinery of these materials, which could inspire new forms of electronic matter and high-temperature superconductivity.
Researchers developed a technique to predict how quantum systems behave when connected to their environment, turning a problem into a solution. The approach combines techniques from quantum many-body physics and non-Hermitian quantum physics, providing a crucial tool for real-world applications of quantum technology.
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 ...
A new mathematical theory developed by scientists at Rice University and Oxford University can predict the nature of motions in complex quantum systems. The theory applies to any sufficiently complex quantum system and may give insights into building better quantum computers, designing solar cells, or improving battery performance.
Researchers from Iowa State University and Tufts University are using quantum computing to simulate and study atomic nuclei. They aim to understand the fundamental laws of nature governing nuclear formation in the Big Bang and supernovae.
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.
The Heidelberg Laureate Forum Foundation offers journalist travel grants to cover the 10th HLF from September 24-29, 2023. Recipients of prestigious awards in mathematics and computer science will gather with young researchers for a week of interdisciplinary dialogue.
The Purdue University team has proposed a quantum device that can theoretically model and test emergent particles, including the Fibonacci anyon. This discovery could lead to more efficient quantum computing technology by resisting decoherence.
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.
Researchers have developed a method to perform arbitrary connectivity optimization using Rydberg atom arrays, expanding the class of problems solvable by neutral-atom machines. This breakthrough enables applications in logistics scheduling, pharmaceuticals, and other fields.
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.
Scientists have detailed the atomic structure of superconducting RbV3Sb5 at 103 degrees Kelvin, revealing a unique lattice pattern and charge-density wave. This breakthrough provides a new understanding of exotic states of matter and brings researchers closer to developing higher-temperature superconductors.
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.
Scientists at Stanford University and SLAC National Accelerator Laboratory have made progress toward building a novel quantum simulator. The device can simulate interactions between two quantum objects, paving the way to study complex systems and answer fundamental questions in physics.
Researchers at MIT have discovered a way to switch graphene's superconductivity on and off with short electric pulses, opening up new possibilities for ultrafast brain-inspired electronics. This discovery could lead to energy-efficient superconducting transistors for neuromorphic devices.
Researchers have developed a novel type of analogue quantum computer that can tackle hard physics problems beyond current digital capabilities. The new Quantum Simulator architecture uses hybrid metal-semiconductor components to simulate quantum materials and behaviors.
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 at University of Copenhagen and Ruhr University Bochum have made a groundbreaking discovery, solving a long-standing problem in quantum physics. They can now control two quantum light sources, enabling the creation of quantum mechanical entanglement, a phenomenon with sci-fi-like properties.
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.
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.
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.
COSMOCAT proposes using cosmic rays to transport random numbers, eliminating the need to send decryption keys and enhancing local device and network security. The system can be used alongside current wireless technologies, offering faster speeds and limited distance capabilities.
Engineers at Diraq and UNSW Sydney discovered a new way to precisely control single electrons in quantum dots using electric fields, which is less bulky and requires fewer parts. This breakthrough technique can help achieve the goal of fabricating billions of qubits on a single chip for commercial production.
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.
The proposed project relies on Tensor Network Theory (TNT) to calculate multidimensional problems, offering a less expensive and intensive method than standard computing. Researchers aim to successfully simulate turbulence in compressible fluids and combustion chemical reactions.
Scientists successfully created a light source that produced two entangled light beams using rubidium atoms. The entanglement was achieved by adding new detection steps to measure the quantum correlations in the amplitudes and phases of the fields generated, enabling applications in quantum computing, encryption, and metrology.
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 Argonne National Laboratory have developed a way to rotate a single molecule, europium complex, clockwise or counterclockwise on demand. This technology could lead to breakthroughs in microelectronics, quantum computing and more.
Assistant Professor Robert Rand at the University of Chicago received a three-year, $450,000 grant from the Air Force Office of Scientific Research. The funding will support his work on formal verification of the ZX-calculus, a graphical system for representing quantum programs.
Researchers compared two semiconductor simulation tools and found that the Fermi kinetics transport solver outperforms a commercial hydrodynamics software package in modeling electronic heat flow and electron temperature, particularly in high-speed applications. The custom-developed code converges faster and provides more consistent re...
Researchers have created a structure of linked vortices that cannot break apart due to their fundamental properties. This discovery has implications for quantum computing and particle physics, and could lead to more accurate logical operations in topological quantum computing.
Researchers have developed a scaled-up version of a probabilistic computer using stochastic spintronic devices, suitable for combinatorial optimization and machine learning. The new design combines conventional semiconductor chips with modified spintronic devices, achieving massive improvements in throughput and power consumption.
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 at Tohoku University have discovered a new type of energy-band echo associated with the ultrafast dynamics of optically driven quasiparticles in crystalline solids. This discovery enables all-optical momentum-resolved spectroscopy even in strongly correlated systems, revolutionizing quantum technology.
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 new quantum algorithm allows for the direct calculation of energy derivatives, a crucial step in molecular geometry optimization, using only one query on a quantum computer. This breakthrough enables the computation of energy derivatives with respect to nuclear coordinates in a single calculation.
Researchers at University of Notre Dame developed a transparent coating for windows that can block heat and save energy. The coating, called transparent radiative cooler (TRC), allows visible light in while keeping other heat-producing light out, reducing electric cooling costs by one-third in hot climates.
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.
Scientists at the University of Waterloo have developed a device that generates twisted neutrons with well-defined orbital angular momentum, enabling researchers to study next-generation quantum materials. The discovery provides an additional quantized degree of freedom for characterizing complicated materials.
Researchers at NIST created grids of quantum dots to study electron behavior in complex materials. The grids provided ideal conditions for electrons to behave like waves or get trapped in individual dots.
Harvard scientists create a high-performance on-chip femtosecond pulse source using a time lens, enabling broadband, high-intensity pulse sources. The device is highly tunable, integrated onto a small chip and requires reduced power compared to traditional table-top systems.
Researchers at Shinshu University demonstrate the transformation of isolated skyrmions into bimerons in a magnetic disk, showcasing a potential new operation for future computing architectures. The discovery opens up novel spintronic applications based on different topological spin textures.
A research team at Kennesaw State University, led by Assistant Professor Tu Nguyen, has received a $600,000 grant to explore quantum technologies for computing and networking. The project aims to create a new type of computing and networking system that can solve problems faster and more securely than current systems.