Articles tagged with Quantum Computing
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Scientists from FEFU and colleagues developed a resonant lattice laser that controls the near- and mid-IR radiation properties of mercury telluride QDs, overcoming fundamental physical limitations. This enables the creation of ultra-compact bright sources for quantum computers and advanced sensors.
Physicists at PTB and MPIK have developed a method to measure atomic frequencies in highly charged ions, increasing precision by a factor of 100 million. This breakthrough enables the creation of novel atomic clocks and new avenues for searching for new physics.
Researchers at Aarhus University used AlphaZero to control a quantum system, demonstrating its applicability to three different problems. The algorithm learned to exploit an underlying symmetry of the problem, surprising the team with its ability.
Physicists Sanjay Prabhakar and Roderick Melnik modelled the interplay between electric fields and electron spins in slowly moving quantum dots. They revealed that spin-orbit coupling occurs, inducing a magnetic field in the absence of an external one.
Researchers at Lancaster University cooled LEGO to near-absolute zero, revealing its potential as a thermal insulator for dilution refrigerators used in quantum computing. The discovery could lead to cheaper and more efficient scientific equipment.
Researchers have developed a new optical atomic clock called the 'tweezer clock' that uses laser tweezers to manipulate individual atoms. This design combines the advantages of two existing approaches, offering improved accuracy and precision, and paving the way for advances in fundamental physics research and new technologies.
Researchers have developed a new way to simulate quantum systems of many particles, allowing for the investigation of dynamic properties fully coupled to slowly moving ions. This approach overcomes limitations in previous methods and offers new insights into complex mutual interactions between particles in extreme environments.
Researchers at Aalto University have studied the dynamics of quantum knots, finding that they untie themselves within a short period before forming a vortex. This discovery opens up new avenues for experimental research and suggests that quantum knots may be more unstable than previously thought.
The DOE is investing $21.4 million in quantum information science research, focusing on particle physics and fusion energy sciences. This funding will support projects that explore the application of quantum computing to analyze particle physics data and simulate complex systems.
Researchers at OIST Graduate University have developed a new method to detect electrons' transitions to quantum states using image charge detection. This technique has the potential to create a ten-centimeter chip, reducing the size of current quantum computers and bringing them closer to practical use.
The quantum technology company Q-CTRL has secured a $15 million funding round led by Square Peg Capital, placing it among the top 10 global quantum start-ups. The investment will support major growth for the company and geographic expansion to include a new office in Los Angeles.
Scientists have shown that quantum computers have two degrees of freedom for each bit, enabling faster calculations. A simulation tool called Quantum Simulation Logic has been developed to simulate quantum computer properties in a classical computer.
Researchers have successfully described what happens when a massive object is placed in a quantum superposition state near clocks, defying classical descriptions. This discovery reveals that quantum time order can arise, leading to new physical effects and potential applications for quantum technologies.
Researchers have built the world's smallest engine, a single calcium ion, which uses random fluctuations to generate vibrations and store energy in discrete units. This tiny motor has potential applications in recycling waste heat and improving energy efficiency in future technologies.
Physicists from HKUST and PKU successfully simulated 3D topological matter using ultracold atoms, enabling investigation of nontrivial phases in all physical dimensions. The breakthrough opens possibilities for developing new topological materials that don't occur naturally.
Researchers successfully transferred and verified angular momentum basis of quantum information from laser light to an electron trapped on a quantum dot. This achievement marks a significant step towards realizing a quantum internet with secure and rapid quantum information transmission.
Physicists at NIST developed a method to control ion motion and display exact quantities of quantum-level motion, up to 100 packets of energy. The technique enabled the creation of superpositions, allowing for more precise measurements and characterizing frequency.
NIST's quantum logic clock has reclaimed its title as the world's most precise atomic clock, with a systematic uncertainty of 9.4×10^-19, outperforming both NIST's ytterbium and strontium lattice clocks. However, it lags behind in stability, measuring 1.2×10^15 for a 1-second measurement.
A quantum computer has solved a complex chess puzzle using quantum physics, with the solution determined by atomic microscopy. The experiment was designed to demonstrate quantum supremacy for certain optimization problems, and its feasibility is now within reach of laboratory implementation.
Quantum sensors achieve extremely accurate results, surpassing conventional physics limits, enabling precision measurements of molecules and improving gravitational wave detectors. The new approach reduces measurement time by half while maintaining or doubling resolution.
Researchers at Iowa State University have demonstrated the ability to control macroscopic supercurrents using terahertz light, a breakthrough that could lead to faster and more efficient quantum computers. This discovery opens up new avenues for electromagnetic design of emergent materials properties and collective coherent oscillations.
Scientists unveil rigorous quantum mechanical definition of atomic oxidation number, enabling accurate simulations of charge transport in ionic systems crucial to energy technologies and planetary science research. This breakthrough resolves a long-standing conundrum in condensed matter physics.
Researchers developed a new computational method using neural networks to simulate open quantum systems, predicting properties of large-scale quantum systems. This approach addresses the challenges of simulating intrinsically complex tasks with exponentially growing computational power.
A joint team of scientists at UC Riverside and MIT has developed a new heterostructure material system based on gold that can potentially demonstrate the existence and quantum nature of Majorana fermions. The research shows superconductivity, magnetism, and electrons' spin-orbit coupling can co-exist in gold.
Researchers have created a mechanical oscillator that can produce entangled radiation, which could serve as a link between quantum computers and optical fibers. This device has practical value in transferring information between quantum computers.
Researchers have developed a new protocol for storing and releasing single photons, potentially solving critical challenges in quantum computing. The novel protocol uses destructive interference phenomena to prevent leakage and allow photons to be hosted in an embedded eigenstate.
Researchers at the University of Tsukuba developed a novel process for generating coherent lattice waves in silicon crystals using ultrashort laser pulses. This breakthrough may lead to the creation of faster and more efficient quantum computers.
A team of Princeton researchers has successfully controlled Majorana quasiparticles in a setting that makes them more robust. They achieved this by combining a superconductor and an exotic material called a topological insulator, which enables the detection of Majoranas with less susceptibility to heat or vibrations.
Researchers at the University of Innsbruck have developed a quantum sensor that measures visible light particles without destroying them. The innovation, led by Tracy Northup, allows for tailored light fields to be generated through feedback loops, paving the way for future quantum applications.
Researchers at University of Innsbruck discover that digital quantum simulation can retain controlled Trotter errors for local observables, reducing the number of required gate operations. This breakthrough makes digital quantum simulation more accessible to current day quantum devices.
Researchers at the University of Colorado Boulder have developed a new method for trapping single atoms using optical tweezers, achieving an unprecedented 90% success rate. This breakthrough enables the efficient assembly of atom grids, a crucial step towards harnessing quantum computing power.
UTSA engineers develop graphene-based logic device using spintronics to improve energy efficiency in battery-dependent devices. The technology aims to reduce power consumption and enhance quantum computing capabilities.
The new quantum sensor developed by researchers at the University of Waterloo promises significant advancements in long-range 3D imaging and monitoring the success of cancer treatments. The sensors can detect single particles of light with high timing resolution, speed, and efficiency over an unparalleled wavelength range.
Physicists at NIST have cooled a flat crystal of 150 beryllium ions to near-ground state, enabling more realistic quantum simulations and improved sensitivity for sensing weak electric fields and detecting dark matter. This achievement marks a significant advance over previous demonstrations of ion cooling.
Researchers from Tel Aviv University developed a unique spatiotemporal imaging technique to capture the movement of excitons in 2D materials, revealing unprecedented insights into quantum mechanics. The technology enables ultrafast control and extreme spatiotemporal imaging of condensed matter.
Quantum computing aims to break cryptography and speed up database search, but scaling is a significant challenge. Researcher Debbie Leung discusses the ingredients required for accurate quantum computing operations and recent progress with error-correcting codes.
The researchers have produced a catalog of exact sizes and shapes of holes that form in 2-D sheets when atoms are missing from the material's crystal lattice. This new catalog could help open up various potential applications, including filtration, chemical processing, DNA sequencing and quantum computing.
Researchers at Kazan Federal University developed cryptographic algorithms for quantum networks, which can facilitate fast and secure information transfer. The algorithms, known as quantum hash functions, can protect against mistakes and be used for authentication in various areas.
Researchers at Empa and ETH Zurich have developed a novel quantum light source by arranging perovskite quantum dots into a three-dimensional superlattice. This enables the coherent collective emission of photons, creating ultrafast and bright superfluorescence.
ETH Zurich researchers have demonstrated a novel quantum error correction technique that can monitor and correct errors in real-time. The technique, which uses trapped ions to encode quantum information, has been successfully tested with repeated measurements on the same system, exceeding previous experimental limits.
Researchers developed a computer model that simulates the conditions of explosions on short time scales. The new results reveal that a delicate balance of temperature and pressure is necessary for nanodiamonds to form. This study uses atomic-level simulations to provide insights into the formation process.
Experimental physicists at the University of Illinois have created a new disorder-induced topological state, previously predicted to occur in electronic materials. The topological Anderson insulator phase was first discovered theoretically in 2009 and its origin was further explained in subsequent works.
A novel nano material with electrical and magnetic properties has been synthesized by researchers at DTU Chemistry. The material, Chromium-Chloride-Pyrazine, is an organic/inorganic hybrid with promising prospects for quantum computing, superconductors, catalysts, batteries, fuel cells, and electronics.
Qrypt has licensed a novel cybersecurity technology from Oak Ridge National Laboratory to fortify encryption methods. The company will incorporate the quantum random number generator into its platform, using unique and unpredictable encryption keys to create virtually impenetrable communications.
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 NIST create graphene quantum dot structure using magnetic fields, confirming novel pattern of concentric rings. The discovery has practical applications in quantum computing and opens possibilities for relativistic quantum simulators.
Scientists have developed a new method to shuttle lithium ions into the crystal structure of samarium nickelate, a quantum material with exotic electronic properties. This breakthrough could lead to more efficient energy storage and novel applications in computing.
A revised roadmap outlines the current status of quantum technology, examining its challenges and goals. The roadmap identifies key areas of focus, including quantum communication, computing, simulation, metrology, and control.
Researchers have developed a new artificial quantum material that can control internal resistance in multilayered magnetically doped semiconductors, enabling the creation of high-efficiency computers. The material exploits the Quantum Anomalous Hall Effect, allowing for faster computation speeds and improved energy efficiency.
Assistant Professor Madhab Neupane has discovered a new material with multiple quantum properties, which could become the foundation for quantum computers and long-lasting memory devices. The discovery is expected to increase computing power and reduce energy consumption for electronics.
Scientists at NUS have discovered a practical way to observe and examine the quantum effects of electrons in topological insulators and heavy metals. This breakthrough enables the development of advanced quantum computing components and devices, potentially answering some of the world's toughest questions in finance and physics.
Researchers at the University of Colorado Boulder and NIST have developed a device that converts microwave energy into laser light, crucial for sending quantum signals. The team's innovation could one day enable huge networks of quantum computers to communicate efficiently.
The team's device can produce one billion electrons per second and uses quantum mechanics to control them. This breakthrough paves the way for future quantum information processing applications, including defence, cybersecurity and encryption.
NIST researchers have simulated simple logic operations in a liquid medium by trapping ions in graphene, enabling potential applications in water filtration and sensor technology. The ion-trapping approach requires minimal material and can conform to custom shapes.
Researchers at Aalto University have developed an amorphous material exhibiting topological superconductivity, which could lead to the creation of lossless components for quantum computers. This discovery brings the field closer to application and potentially makes fabrication more convenient compared to current methods.
Researchers use ultrafast spectroscopy and terahertz pulses to uncover a new state of matter in superconducting alloys, which could enable faster, heat-free quantum computing and information storage.
Researchers at the University of the Basque Country and University of Hannover achieved quantum entanglement between two spatially separated Bose-Einstein condensates. This breakthrough could lead to significant improvements in fields like quantum computing, simulation, and metrology by creating large ensembles of entangled particles.
Scientists at the University of Innsbruck have successfully demonstrated fully-controlled free-space quantum interference of single photons emitted by a pair of effectively-separated entangled atoms. This breakthrough opens up new possibilities for building quantum computers and measuring physical properties with unprecedented precision.
Portland State University has been awarded a $275,000 NSF grant to explore the cryptography-breaking power of quantum computers and develop new computer science courses. The project aims to broaden participation in computer science among high school students and teachers.
Christa Fluehmann and colleagues demonstrate a way to measure position and momentum with minimal disturbance, enabling precise measurements in a limited range. This relaxation of the uncertainty principle has fundamental implications for quantum mechanics and opens up possibilities for practical applications like quantum computing.