Articles tagged with Quantum Computing
By combining atom array processors with photonic and semiconductor chips, researchers have created a platform for large-scale, interconnected quantum computing. This allows for faster computation abilities and the potential to connect many atom arrays to form a larger quantum system.
The layered multiferroic material nickel iodide (NiI2) has been found to have greater magnetoelectric coupling than any known material of its kind, making it a prime candidate for technology advances. This property could enable the creation of magnetic computer memories that are compact, energy-efficient and can be stored and retrieved...
Researchers at the University of California - Riverside have proposed a chain of quantum magnetic objects called spin centers that can simulate exotic magnetic phases of matter. This breakthrough could lead to more efficient ways of storing and transferring information, as well as the development of room temperature quantum computers.
Researchers have developed a novel method to significantly enhance quantum technology performance by leveraging cross-correlation of two noise sources. This approach extends coherence time, improves control fidelity, and increases sensitivity for high-frequency sensing.
Researchers at University of Chicago PME have outlined a new approach to building long quantum channels using vacuum sealed tubes with spaced-out lenses. These channels can transmit quantum information over thousands of kilometers, enabling large-scale quantum networks that can process tens of terabytes of data per second.
Researchers at Stanford University have developed a chip-scale Titanium-sapphire laser, four orders of magnitude smaller and three orders less expensive than traditional lasers. This breakthrough enables mass production on wafers, potentially thousands of lasers per disc, democratizing access to these powerful tools.
A team of scientists led by Qimiao Si predicts the existence of flat electronic bands at the Fermi level, which could enhance electron interactions and create new quantum phases. These bands have the potential to enable new applications in quantum bits, qubits, and spintronics.
Researchers developed a symbolic model checking approach to verify quantum circuits, addressing the gap between model-checking quantum programs and quantum circuits. They used Maude programming language to formally specify and verify quantum circuits, confirming their correctness and paving the way for error-free quantum computing.
A team of researchers has developed a platform to probe, interact with and control quantum systems in silicon. They used an electric diode to manipulate qubits inside a commercial silicon wafer, exploring how the defect responds to changes in the electric field and tuning its wavelength within the telecommunications band.
Researchers at Chalmers University of Technology have created a unique system that combats the trade-off problem between operation complexity and fault tolerance. The system uses harmonic oscillators to encode information linearly, offering a seamless gradient of colors and providing far richer possibilities than traditional qubits.
Researchers developed a quantum annealing approach to accelerate data assimilation, significantly reducing computational cost. The method achieves comparable accuracy to conventional approaches but in a fraction of the time.
Researchers at Clemson University have developed a new noncentrosymmetric triangular-lattice magnet, CaMnTeO6, which displays strong quantum fluctuations and nonlinear optical responses. This breakthrough material has the potential to lead to advancements in solid-state quantum computing, spin-based electronics, resilient climate chang...
A groundbreaking study introduces a method for sorting vector structured beams with spin-multiplexed diffractive metasurfaces, promising significant advancements in optical communication and quantum computing. This technology enables precise control over complex light beams, opening new avenues for scientific exploration.
Researchers have developed a scalable, modular hardware platform that integrates thousands of interconnected qubits onto a customized integrated circuit. This 'quantum-system-on-chip' (QSoC) architecture enables precise control and tuning of a dense array of qubits, making it possible to achieve large-scale quantum computing.
Researchers at Lancaster University and Radboud University Nijmegen have discovered a novel pathway to modulate and amplify spin waves at the nanoscale, paving the way for dissipation-free quantum information technologies. The study's findings could lead to the development of fast and energy-efficient computing devices.
Researchers at JPMorgan Chase, Argonne National Laboratory and Quantinuum show a quantum algorithmic speedup for the QAOA algorithm on the Low Autocorrelation Binary Sequences problem. The team demonstrates a significant step towards reaching quantum advantage, laying the foundation for future impact in production.
Cleveland Clinic and IBM researchers develop a hybrid framework combining quantum and classical computing methods for protein structure prediction. This approach overcomes limitations of current classical methods and demonstrates improved accuracy in predicting protein structures.
Researchers at the University of Innsbruck developed a novel method using diffusion models to generate quantum circuits. The model can produce accurate and flexible circuits, including those tailored to specific quantum hardware connections.
UC Irvine researchers create ultra-thin bismuth sheets for flexible technologies, revealing hidden electronic behaviors and quantum oscillations. The new production method uses compression and molding techniques, potentially simplifying mass production of electronic devices.
Researchers from Tokyo Institute of Technology experimentally revealed that high-density Ca introduction enhances superconductivity in graphene-calcium compounds through confinement epitaxy, leading to increased critical temperatures. This breakthrough could enable the development of C6CaC6 superconductors with wide applicability in qu...
Researchers at Tel Aviv University developed a method to grow ultra-long and narrow graphene nanoribbons with semiconducting properties, opening doors for technological applications in advanced switching devices and spintronic systems. The study's success demonstrates a breakthrough in carbon-based nanomaterials.
Scientists at the University of Rochester have developed a technique for pairing particles of light and sound, allowing for faithful conversion of information stored in quantum systems. The method uses surface acoustic waves, which can be accessed and controlled without mechanical contact, enabling strong quantum coupling on any material.
Researchers created a digital twin model that predicts and controls complex systems, achieving higher accuracy than traditional methods. The algorithm is compact, energy-efficient, and easy to implement, making it suitable for self-driving vehicles and other dynamic systems.
Researchers developed a probabilistic approach to generate optimal sequences for execution on quantum computers, reducing search time by several orders of magnitude. The new method enables efficient searches within classical computational resources, contributing to the realization of the quantum Internet and improved performance.
Researchers at the University of Melbourne and Manchester have invented a breakthrough technique for manufacturing highly purified silicon, making it ideal for creating powerful quantum computers. The new technique uses qubits of phosphorous atoms implanted into crystals of pure stable silicon, extending the duration of notoriously fra...
Researchers at the University of Manchester have developed an ultra-pure form of silicon that can be used to construct high-performance qubit devices, a crucial component for scalable quantum computers. The breakthrough could enable the creation of one million qubits, which may be fabricated into pinhead-sized devices.
MIT physicists arrange dysprosium atoms as close as 50 nanometers apart, a limit previously set by the wavelength of light. This allows for enhanced magnetic forces, thermalization, and synchronized oscillations, opening new possibilities for studying quantum phenomena.
Scientists have discovered a rule governing the phenomenon of quantum entanglement, known as the 'entropy' of entanglement. This finding could lead to better understanding and manipulation of quantum entanglement, a key resource for future quantum computers.
Researchers at Pritzker School of Molecular Engineering developed a blueprint for a quantum computer that can efficiently correct errors using qLDPC codes and reconfigurable atom arrays. This new system reduces the overhead required for quantum error correction, enabling scaling up quantum computers.
A team of researchers created a single negatively charged lead-vacancy center in diamond, which emits photons with specific frequencies not influenced by the crystal's vibrational energy. This characteristic makes the PbV center a promising building block for large-scale quantum networks.
A team of world-leading experts is developing new quantum algorithms to process biological data, aiming to speed up analysis of pangenomic datasets. This project has the potential to revolutionize genomic science and medicine by unlocking new insights into genetic diversity.
A new study by the University of Exeter finds that China's growing use of emerging technologies in civilian and military domains has escalated its stakes as a threat and near-peer competitor to the US. Western states have responded with diplomatic efforts, bans, and restrictions to undermine China's power.
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.
The study leverages quantum entanglement and nonlocality to overcome noise challenges in quantum communication. By adding an extra connectivity link, researchers recovered lost quantum nonlocality, advancing our understanding of quantum phenomena and paving the way for resilient quantum technologies.
A new study published in Physical Review Letters has developed a method for secure quantum computing, enabling users to access remote quantum computers while maintaining data authenticity and security. This breakthrough promises to unlock the transformative potential of cloud-based quantum computing.
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.
Researchers found a way to use heat to toggle a crystal between two electronic phases, storing qubits in topologically protected states that could reduce decoherence-related errors. The discovery may lead to the creation of flash-like memory capable of storing quantum bits of information.
Rice University engineers have demonstrated a way to control the optical properties of T centers, paving the way toward leveraging these point defects for building quantum nodes. By embedding a T center in a photonic integrated circuit, they increased the collection efficiency for single photon emission by two orders of magnitude.
Molecular quantum computing may connect quantum biology and cognitive science through shared concepts like quantum degrees of freedom. Researchers explore potential links between charge movement, spin states, and biological processes in neurons and photosynthesis.
Researchers have proposed an innovative quantum algorithm that effectively solves combinatorial optimization problems with constraints in a short time. The pVSQA algorithm uses a quantum device to generate a variational quantum state and transform infeasible solutions into feasible ones, achieving near-optimal performance.
Researchers developed an automated protocol-design approach to determine optimal random quantum circuits for quantum computational advantage experiments. The new method uses the Schrödinger-Feynman algorithm to evaluate complexity, reducing estimation time and increasing the gap between quantum computing and classical simulation.
Researchers at the University of Waterloo have created a novel quantum dot source that produces near-perfect entangled photons, a crucial step towards global-scale secure quantum communication. This achievement combines two Nobel Prize-winning concepts and has significant implications for quantum key distribution and quantum repeaters.
The University of California, Riverside's new QuVET center aims to harness quantum mechanics in energy and time, with a focus on vibronic effects in molecular systems. The collaboration between UCR and top universities will explore ways to enhance energy transport efficiency and develop new technologies.
Researchers at ETH Zurich developed a new ion trap for larger quantum computers using static magnetic fields, overcoming previous limitations with oscillating fields. The Penning trap design allows for arbitrary transport and control of qubits, enabling future supercomputers.
Researchers are developing a satellite-based quantum light source for secure communication, leveraging the laws of physics to encode and transmit data. The technology has the potential to extend quantum cryptography over long distances, enabling secure communications between cities or continents.
The Princeton Plasma Physics Laboratory has opened a new Quantum Diamond Lab to study plasma processes for creating diamond material with unique properties. Scientists aim to harness this material for quantum computing, secure communication, and precise measurements, enabling breakthroughs in fields like medicine and energy.
Researchers developed an approach called Quantum Noise Injection for Adversarial Defense (QNAD) to protect quantum computers from attacks. The method introduces noise into the quantum neural network, making it more accurate during an attack.
Nai-Hui Chia, an assistant professor of computer science at Rice University, has received a National Science Foundation CAREER Award to develop a new theoretical framework for efficient quantum algorithms. The grant aims to enhance the security of quantum cryptography and tackle complex problems in physics and machine learning.
A team from Osaka University's SANKEN Institute used the shortcuts to adiabaticity (STA) method to speed-up the adiabatic evolution of spin qubits. The spin flip fidelity after pulse optimization reached up to 97.8%. This method may be useful for fast and high-fidelity quantum control in other systems.
Yonglong Xie, a Rice University assistant professor, has received an $888,555 NSF CAREER Award to explore magnon-based quantum technology. He aims to create synthetic matter and next-generation devices with unprecedented functionalities.
Scientists have successfully engineered a high-performing niobium-based qubit that rivals state-of-the-art qubits in their class. The breakthrough expands the possibilities of future quantum technologies, including quantum computers, networks, and sensors.
Researchers at MIT have observed a rare electronic state in which electrons become fractions of their total charge without the need for external magnetic fields. This effect, known as the fractional quantum anomalous Hall effect, has significant implications for the development of topological quantum computing.
The Heidelberg Laureate Forum Foundation offers limited international journalist travel grants to report on the event. Journalists can apply until April 28, 2024, and will cover travel and visa costs, as well as room and board during their stay in Heidelberg.
Researchers at UNSW Sydney have successfully encoded quantum information in four distinct ways using a single antimony atom. This breakthrough enables more flexibility in designing future quantum computing chips, with each method offering unique advantages and potential trade-offs.
Natalia Chepiga's new design for quantum computers allows for more complex simulations and enables the creation of a 'steering wheel' to tune into interesting phenomena. This upgrade will facilitate breakthroughs in understanding nature and revolutionize society, with applications in finance, encryption, and data storage.
A team of researchers has revised the fundamental equation for superconducting quantum bits, revealing that harmonics are superimposed on the fundamental mode, resulting in corrections that can lead to quantum bits that are 2-7 times more stable. Experimental evidence from multiple laboratories supports this finding.
Researchers from Hebrew University of Jerusalem have successfully integrated single-photon sources onto tiny chips at room temperature using a hybrid metal-dielectric bullseye antenna. This innovation enables efficient back-excitation and front coupling of emission to optical fibers or low numerical aperture optics, promising advanceme...
A new technique enables researchers to identify and control a greater number of atomic-scale defects in diamonds, which can be used to build larger systems of qubits for improved quantum sensing. This approach uses a specific protocol of microwave pulses to locate and extend control to additional defects.
Researchers at Penn State have created a new fusion of materials that exhibits chiral topological superconductivity, a property required for topological quantum computation. The combination of magnetic materials and iron chalcogenide could enable the development of robust quantum computers with unique properties.
A team of researchers from the universities of Mainz, Olomouc, and Tokyo has successfully generated a logical qubit from a single light pulse that can correct errors. This breakthrough uses a photon-based approach to overcome the limitations of current quantum computing technology.