Articles tagged with Quantum Information
A new concept from Warwick researchers introduces Quantum Phononic Links, which use sound vibrations to carry quantum information between qubits across an entire semiconductor chip. This approach enables long-range qubit connectivity, paving the way for building large-scale quantum computers with millions of qubits.
Researchers at Science Tokyo develop a Ramsey-based magnetometer that overcomes thermal limitations, enabling close-proximity detection of weak biomagnetic signals. The sensor achieves high sensitivity and safe operation near biological tissue.
Researchers successfully sent entangled photons through a 24.4-kilometer fiber-optic cable while carrying high-capacity internet traffic. The quantum signals remained intact, preserving entanglement with over 94% fidelity.
Researchers at Worcester Polytechnic Institute are launching a three-year project to train high school teachers in quantum information science and cybersecurity. The program aims to inspire young people to pursue education and careers in emerging science and technology fields.
Researchers at the Institute for Basic Science have developed a new strategy for electrically controlling molecular quantum systems, enabling precise control of individual molecular spins. This breakthrough offers a practical approach to building future molecular quantum technologies.
Researchers at Aalto University have demonstrated the first cyclic quantum heat engine inside a superconducting circuit, enabling technologies needed for high-qubit quantum computers. The study provides a solid proof of concept for superconducting heat engines and could reduce the cost and complexity of large-scale quantum computing.
Researchers from Paderborn University, along with colleagues from Berlin and beyond, have secured funding for their project on semidefinite foundations for quantum codes. The aim is to develop mathematical foundations for quantum codes, crucial for building fault-tolerant quantum computers.
Researchers at Texas A&M University develop a laser technique called TRIP to directly measure quantum forces shaping proteins, enabling accurate prediction of how pharmaceutical drugs interact with them. This breakthrough could lead to the design of medicines tailored to specific diseases, revolutionizing precision medicine.
The U-M-led QuPID project aims to design connectable quantum photonic chips for field-ready, lab-grade measurements. The team plans to miniaturize these technologies with a suite of quantum components, envisioned as 'Legos' to be combined for building different devices.
A UK collaboration has demonstrated a key principle behind next-generation quantum detectors can work under realistic conditions. By comparing two long-baseline atom interferometers, researchers effectively cancelled experimental noise, opening the door to searches for gravitational waves and signatures of exotic forms of dark matter.
Researchers created a new quantum computing paradigm, QHDC, that works 500 times faster than existing methods. It uses hyperdimensional vectors and leverages quantum properties to efficiently encode and process complex data.
UChicago researchers design a setup to produce a variety of quantum states useful for ultraprecise sensing and exotic quantum materials. By breaking symmetry, they can tune the system to generate a range of different entangled states, all without changing physical components.
The Barcelona Supercomputing Center has inaugurated its third quantum computer, EuroQCS-Spain, integrating classical and digital computing with analog processing. This system enhances MareNostrum 5's capabilities, supporting European research and industry in quantum technologies.
A new laser-based process is set to revolutionize photonics manufacturing by removing manual calibration, which accounts for over half of production costs. The technology promises faster, cheaper, and precise manufacturing at sub-micron tolerances.
QuVET researchers explore how quantum wave functions move through ultra-thin materials, which could improve solar energy technologies and enable new forms of quantum control. They also manipulate quantum states in materials only a few atoms thick, opening possibilities for energy conversion and future quantum technologies.
Scientists at Penn State and UChicago uncover the physical principles of superconductivity in diamond, enabling multiple functions on one quantum chip. The discovery offers a potential roadmap for improving the performance and temperature range of future quantum devices.
A team at Aalto University has developed a quantum-inspired algorithm that enables the solution of colossal problems in quantum materials. This breakthrough could lead to the creation of new quantum materials for use in quantum computers and dissipationless electronics.
A University of Sydney physicist has developed a new approach to quantum error correction that could significantly reduce the number of physical qubits required to build large-scale, fault-tolerant quantum computers. The study introduces gauge theory-inspired design for efficient processing and logical information storage.
Researchers at UMass Amherst have made a breakthrough in shrinking the size of quantum computers by integrating laser systems onto photonic chips. This technology has the potential to enable large-scale quantum computing and make optical clocks portable, with applications in fields such as deep space navigation and GPS.
The breakthrough enables complex states of light to be used in quantum computing, reducing imperfections and increasing scalability. This achievement paves the way for innovations in medicine, materials science, data management, and security.
Researchers at UC Santa Barbara have identified a hydrogen-free, telecom-wavelength quantum-light emitter in silicon, called the CN center. This defect reproduces key electronic and optical properties of the T center, making it a promising alternative for practical quantum devices.
A study reveals that identical photons in optical circuits exhibit Hopfield Network behavior, enabling associative memory mechanisms similar to the human brain. The research finds a fundamental limit to memory capacity, with quantum coherence allowing correct retrieval but transitioning to disorder as data volume increases.
Researchers have achieved a crucial building block for new quantum computers by realizing a novel type of quantum logic gate that works with pairs of photons in four different states, enabling new opportunities for optical quantum computing. This milestone opens up possibilities for faster calculations and improved stability.
Giant superatoms combine two quantum-mechanical constructs to suppress decoherence and create entanglement, opening opportunities for scalable and reliable quantum systems. This breakthrough enables quantum information to be protected, controlled, and distributed in new ways.
Duke University researchers have observed statistical localization in a neutral-atom platform, where most configurations of quantum bits remain effectively frozen. This phenomenon has implications for robustly storing information in a quantum system and could be a powerful feature of quantum mechanics.
The QCyber project aims to develop secure quantum-based methods for communication among multiple users, including diplomatic and financial applications. It will be tested in a real fibre-optic network in Stuttgart with up to six nodes and over distances of up to 20 km.
A team of Chinese researchers has achieved device-independent quantum key distribution over 100 km, paving the way for practical long-distance quantum networks. This breakthrough enables the creation of scalable quantum repeaters, a critical building block for universal quantum computers.
Researchers identified surface noise mechanisms that degrade NV center coherence in diamond, which limits sensor performance. The study provides physics-based guidelines for engineering diamond surfaces to preserve quantum coherence.
Scientists at Chalmers University of Technology have created a novel quantum refrigerator that utilizes problematic noise to cool down extremely low temperatures. The innovative design enables precise control over heat and energy flows, making it an essential component for scaling up quantum technology.
A new project aims to develop robust logical quantum bits for scalable and fault-tolerant quantum computing. The snaQCs2025 project combines innovative simulation and integration methods to compensate for error susceptibility of physical qubits, bringing quantum computing closer to practical use.
Researchers have discovered a new method for generating highly stable and precise microwave signals through self-induced superradiant masing. This phenomenon produces long-lived bursts of microwave emission without external driving, paving the way for technological advances in fields like medicine, navigation, and quantum communication.
Researchers at Paderborn University and TU Dortmund University have developed materials smaller than the wavelength of light and precisely manipulated photons. They created quantum light sources for quantum computing and ultra-fast communication, as well as low-temperature electronics to control quantum experiments.
The study reveals the exceptional versatility of magnetic Weyl semimetals in chiral control, enabling real-time and reversible modulation by external fields. This property establishes them as a more adaptable platform for future quantum devices based on chiral degrees of freedom.
Researchers have developed a nearly 100 times smaller device that can efficiently control lasers required for thousands of qubits, unlocking potential for larger quantum computers. The device uses microwave-frequency vibrations to manipulate laser light with extraordinary precision.
A team of researchers at Waseda University has discovered a new correlation between spins, orbitals, and lattice distortions in spinel-type compounds. Magnetic ordering can trigger Jahn-Teller distortions through spin-orbit coupling.
A team of researchers from Paderborn University and the Sapienza University of Rome successfully teleported the polarisation state of a single photon between two physically separated quantum dots. This achievement represents a crucial step towards scalable quantum relays and the practical implementation of a quantum internet.
Scientists at the University of Stuttgart have successfully teleported quantum information between photons from two distant quantum dots, overcoming a crucial technical hurdle. The achievement brings them closer to developing quantum repeaters for the quantum internet.
Researchers developed a new method to build rare-earth doped crystals, increasing quantum coherence times and enabling long-distance connections. This breakthrough brings the potential for a global-scale quantum internet closer than ever.
Researchers have successfully demonstrated the feasibility of sending entangled photon pairs from ground stations to a satellite, overcoming previous barriers to quantum satellite communications. This breakthrough could pave the way for future quantum computer networks using satellite relays.
Researchers have developed a highly efficient fiber-coupled single-photon source that generates photons directly inside an optical fiber, reducing transmission loss. This breakthrough enables the creation of secure quantum communication networks and paves the way for next-generation all-fiber-integrated quantum computing technologies.
Scientists observed tiny but spontaneous distortions in the crystal lattice of Cu_xBi_2Se_3 as it entered a superconducting state. This marks the first clear evidence of a topological superconductor coupling to the crystal lattice, advancing understanding of exotic electronic states.
Researchers have created a chip-based device that can split phonons, enabling the connection of different quantum systems via phonons. This device could help link superconducting qubits with spin-based systems, supporting advances in computing and secure communication.
The development of molecular qubits that operate at telecom frequencies enables the creation of ultra-secure communication channels and precise sensing capabilities. These tiny molecules can be integrated into chips and used for computing, communication, or sensing, paving the way for compact quantum devices.
Scientists develop novel LDPC quantum error correction codes that can handle hundreds of thousands of logical qubits and approach the theoretical hashing bound. The new codes achieve extremely high decoding performance, demonstrating a frame error rate as low as 10^-4, even for large-scale numerical simulations.
Researchers at the University of Sydney have developed a new strategy to precisely measure position and momentum simultaneously, sacrificing some global information for finer detail. This breakthrough could enable ultra-precise quantum sensors for navigation, medicine, astronomy, and fundamental physics applications.
Researchers at U-M have established a quantum testbed that links two labs with optical fibers, enabling remote quantum experiments and expanding access to quantum technology development. The testbed allows for the transfer of entangled light over long distances, revolutionizing communication, computing, and scientific discovery.
A Chicago Quantum Exchange-led coalition, Quantum Connected, has advanced to the final stage of the National Science Foundation Regional Innovation Engines program. The coalition aims to build critically needed quantum-based cyber security and could receive up to $160 million over 10 years.
A team of researchers at Simon Fraser University has created a new type of silicon-based quantum device controlled by both electricity and light. The breakthrough demonstrates an electrically-injected single-photon source in silicon, clearing a major hurdle for building a scalable quantum computer. This development holds significant po...
Researchers developed a new tool that combines electronic structure theories and machine learning to simulate transition metal catalytic dynamics. The Weighted Active Space Protocol (WASP) delivers dramatic speedups, enabling simulations of catalysts under realistic conditions.
Scientists have developed a method to generate pseudomagnetic fields inside photonic crystals, allowing for arbitrary control of light flow. This technique enables high-speed data transmission and opens new possibilities for optical communications and quantum technologies.
Researchers at Purdue University develop atomic-scale spectroscopy using ultrathin 2D materials, enabling improved resolution for NMR spectroscopy. The breakthrough has potential applications in quantum computing and quantum communications.
The team's integrated chip coordinates quantum and classical data, speaks the same language as the modern web, and automatically corrects for noise. The approach paves the way for a future 'quantum internet,' which could enable advances like faster AI and new materials.
The POEM Technology Center in Denmark will produce advanced wafers for photonic chips, enabling the development of high-speed communication and optical data processing. The facility will also facilitate the production of quantum chips, a key component in large-scale quantum computing.
Researchers at the University of California, Riverside, have made a breakthrough in building larger and more reliable quantum computers by linking multiple quantum chips. The team found that even imperfect links between quantum chips can produce a functioning fault-tolerant quantum system.
Researchers at the University of Innsbruck have demonstrated a powerful node for quantum networks using a string of calcium ions in a prototype computer. The node achieved an average ion-photon entanglement fidelity of 92 percent, paving the way for connecting entire quantum processors across laboratories or continents.
Researchers have designed protein qubits that can be produced by cells naturally, opening possibilities for precision measurements of tissues, single cells, or even individual molecules. These protein-based qubits can detect signals thousands of times stronger than existing quantum sensors.
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 propose a quality management system for quantum technologies to ensure security, interoperability, transparency and accountability. International standards can facilitate cooperation among countries like China, the US, and Europe, creating trust in new technologies.
A new study demonstrates how a single type of 'neglecton' particle can make Ising anyons universal, enabling any quantum computation through braiding alone. The breakthrough uses non-semisimple topological quantum field theories to overcome unitarity issues and unlock the full power of Ising-based systems.
New experimental techniques can measure intense magnetic fields generated in heavy-ion collisions, shedding light on fundamental physics and the early universe. By studying magnetic field evolution over time, researchers can gain insights into QGP behavior and its effects on particles.