Articles tagged with Quantum Entanglement
Genuine multipartite entanglement, a potent form of entanglement for quantum info processing, has been certified in arbitrary sizes and forms using a new method. The new method, which decomposes the internal structure of the system, proves the existence of genuine multipartite entanglement in weakly entangled states.
Physicists at the University of Basel have experimentally demonstrated a negative correlation between the spins of paired electrons from a superconductor. The researchers used spin filters made of nanomagnets and quantum dots to achieve this, as reported in the scientific journal Nature.
Scientists verified genuine multipartite nonlocality, demonstrating that bipartite and tripartite correlations cannot explain all natural correlations. The study used Local operation and shared randomness to rule out local explanations, paving the way for future experiments on more extensive quantum systems.
Researchers at Trinity College Dublin discovered that quantum computation may be used by the human brain, correlating with short-term memory performance and conscious awareness. This finding could enhance our understanding of brain functions and potentially lead to innovative technologies.
Researchers from HKU and Harvard University have developed a new triangular lattice model and sweeping cluster algorithm to simulate Rydberg arrays. Their simulations reveal highly entangled Z2 quantum spin liquids with large parameter regimes, providing valuable insights for future experiments.
A multi-institutional team has developed an efficient method for measuring high-dimensional qudits, which are more resistant to noise and can carry more information than qubits. The technique uses phase modulators and pulse shapers to characterize qudit entanglement with unprecedented precision.
Researchers have successfully demonstrated large numbers of interacting qubits maintaining coherence for an unprecedentedly long time, in a programmable solid state superconducting processor. This breakthrough could accelerate computing processes and enable applications such as quantum sensing and metrology.
Scientists from Paderborn and Ulm universities create a programmable optical quantum memory, enabling the efficient growth of large entangled states. This breakthrough milestone brings researchers closer to practical applications of useful quantum technologies.
Physicists used machine learning to compress a complex quantum problem into four equations, capturing the physics of electrons on a lattice with high accuracy. The approach could revolutionize how scientists investigate systems containing many interacting electrons and potentially aid in designing materials with sought-after properties.
Researchers use classical computers to make predictions about quantum systems, helping to solve physics and chemistry problems. Machine learning tools provide a bridge between the human world and quantum reality.
Researchers from Rice University and partners identified three promising candidate materials using a new framework that cross-references information in a database of known materials with theoretical calculations. The method could help explore strongly correlated topological matter, a large and largely uninvestigated landscape.
Researchers at Rice University have discovered a unique arrangement of atoms in iron-germanium crystals that leads to a collective dance of electrons. The phenomenon, known as a charge density wave, occurs when the material is cooled to a critically low temperature and exhibits standing waves of fluid electrons.
Scientists have developed a thin device that can produce complex webs of entangled photons, enabling new information processing schemes and advanced encryption methods. The device uses a metasurface to control the phenomenon of quantum entanglement, paving the way for more compact and powerful computing and sensing technologies.
Researchers from Purdue University have proposed a method to generate entangled photons at extreme-ultraviolet wavelengths, enabling the tracking of electron dynamics on attosecond timescales. This could push the limits of measurement down to zeptoseconds, improving our understanding of atomic and molecular behavior.
Scientists have observed a new type of quantum phase transition in lithium holmium fluoride (LiHoF4) where entanglement occurs on a scale of thousands of atoms. This discovery has implications for our understanding of quantum phenomena and potential applications.
Researchers at the Max Planck Institute have successfully generated up to 14 entangled photons using a single atom, enabling efficient creation of quantum computer building blocks. This breakthrough could facilitate scalable measurement-based quantum computing and enable secure data transmission over greater distances.
Physicists have developed a 'master equation' to understand feedback control at the quantum level, enabling precise real-time control over quantum systems. This breakthrough has the potential to revolutionize quantum technologies by exploiting quantum effects and mitigating fragile system properties.
The University of Delaware and the University of New Mexico are collaborating on a $4 million grant to develop quantum photonics technologies. This initiative aims to prepare a skilled workforce for the growing quantum computing market, projected to grow from $486 million in 2021 to $3.2 billion by 2028.
Scientists from Göttingen and Lausanne successfully created electron-photon pairs in an electron microscope for the first time. This breakthrough enables researchers to harness free electrons and photons in a controlled manner.
Researchers from the University of Pennsylvania establish a relationship between topology and entanglement, tying two major principles in physics together. The connection reveals that the genus of the Fermi surface is closely related to a measure of quantum entanglement called mutual information.
Scientists have successfully implemented the world's fastest two-qubit gate in a quantum computer, achieving an impressive speed of 6.5 nanoseconds using cold atoms cooled to near absolute zero and optical tweezers. This breakthrough has significant implications for the development of ultrafast quantum computing hardware.
Physicists have created a way to simulate quantum entanglement between interacting particles using neural networks and fictitious 'ghost' electrons. This approach enables accurate predictions of molecule behavior, which could lead to breakthroughs in pharmaceutical development and material design.
Researchers demonstrate device-independent quantum key distribution using quantum entanglement, paving the way for secure communication. The breakthrough ensures security without relying on the eavesdropper's computational power.
A research team from HKU discovered clear evidence of a highly entangled quantum matter, known as a quantum spin liquid (QSL), through large-scale simulations on supercomputers. The findings suggest the existence of QSLs in nature and provide new insights into topological order and quantum entanglement.
Researchers have demonstrated a significant improvement in fibre-integrated quantum memories, achieving an entanglement storage time of over 1000 microseconds. The fully integrated device enables the use of sophisticated control systems, allowing for improved scalability and compatibility with telecommunications infrastructure.
Physicists have successfully entangled two atomic quantum memories over a 33-kilometer-long fiber optic connection, setting a new record. The entanglement is mediated via photons emitted by the two quantum memories and has potential applications in large-scale quantum networks and secure communication protocols.
Researchers at the University of Colorado Boulder and NIST have successfully demonstrated reading out signals from superconducting qubits using laser light, preserving the qubit's information. This breakthrough could enable the creation of a quantum internet, allowing for secure communication over long distances.
A team of physicists has developed a way to perform high precision measurements without relying on special entangled states of light. The breakthrough uses ring resonators, which can be mass manufactured using standard processes, and enables the creation of chip-scale photonic sensors operating at the quantum limit.
Researchers at the University of Innsbruck have successfully implemented a universal set of gates on encoded logical quantum bits, enabling fault-tolerant quantum computing. The demonstration showcases two essential gates: CNOT and T-gates, which are crucial for programming all algorithms.
Researchers at QuTech have demonstrated the first non-adjacent node-to-node teleportation of quantum information in a network, leveraging entangled states and quantum processors. This breakthrough enables future applications like secure data sharing and precise quantum sensors.
A theoretical study reveals that long-range quantum entanglement can persist at temperatures above absolute zero if a three-way interaction is present. This finding has significant implications for the development of room-temperature stable quantum devices, which could revolutionize future energy transport and computing.
A comprehensive review of non-separability in classical light explores its potential for fundamental science and applications. The study introduces a unified framework for classifying non-separable states involving different degrees of freedom of light, offering a timely perspective on the field.
Scientists have developed a transparent device that produces a hidden image when light shines on it, using liquid crystals to recreate an ancient light trick. The technology has the potential to enable reconfigurable displays and stable 3D images.
A team of scientists at Argonne National Laboratory has developed a new qubit platform formed by freezing neon gas into a solid and trapping an electron there. The platform shows great promise in achieving ideal building blocks for future quantum computers, with promising coherence times competitive with state-of-the-art qubits.
Researchers discovered a novel connection between superposition and entanglement that goes beyond quantum theory, applicable to more exotic theories. This equivalence has practical implications for ultra-secure encryption, including popular protocols like BB84.
A Harvard-led team created a new method for processing quantum information that allows for the dynamic change of atoms' layout during computation, expanding capabilities and enabling self-correction of errors. This approach uses entanglement to connect atoms remotely and can process exponentially large amounts of information.
The study investigates the role of physical principles in quantum Darwinism, finding that it relies on non-classical features, specifically entanglement, to emerge via natural selection. The researchers employed generalized probabilistic theories to analyze and compare different physical theories.
Researchers have developed a key experimental device for future quantum physics-based technologies by coupling nanomechanical oscillators with qubits. This enables the manipulation of quantum states in mechanical oscillators, generating quantum mechanical effects that could empower advanced computing and precise sensing systems. The de...
Researchers at Princeton University have achieved an unprecedented level of fidelity in two-qubit silicon devices, paving the way for the use of silicon technology in quantum computing. The study's findings suggest that silicon spin qubits have advantages over other qubit types, including scalability and size limitations.
Assistant Professor Henry Yuen at Columbia University will receive a $675,000 grant to develop verification protocols for entanglement theory and explore broader mathematical applications. His work aims to solve fundamental problems in computer science, mathematics, and physics using quantum entanglement.
Physicists at the University of Innsbruck have developed a programmable quantum sensor that can measure with even greater precision, using tailored entanglement to optimize performance. The sensor autonomously finds its optimal settings through free parameters, promising a significant advantage over classical computers.
A UNIGE team has successfully stored a quantum bit for 20 milliseconds in a crystal-based memory. This achievement marks a major step towards the development of long-distance quantum telecommunications networks.
Quantum charging technology has been developed to charge batteries at a faster rate, cutting the charging time of electric vehicles from ten hours to three minutes. The technology uses quantum resources to charge all cells within the battery simultaneously, leading to a significant speedup in charging speed.
Scientists have achieved efficient quantum coupling between two distant magnetic devices, which can host magnons and exchange energy and information. This achievement may be useful for creating new quantum information technology devices.
Recent research on gravitational wave detectors shows large objects can be shielded from environmental influences to become one quantum object. This decoupling enables measurement sensitivities impossible without it, advancing sensor technology.
Researchers at the University of Innsbruck have successfully manipulated dark states in superconducting circuits using microwave radiation. The team's discovery opens up new possibilities for quantum simulations and information processing, which could have significant implications for fields such as chemistry and materials science.
Researchers have leveraged quantum information theory techniques to amplify entanglement in the Hawking effect, a process previously difficult to test due to the faint nature of Hawking radiation. By illuminating event horizons with appropriately chosen quantum states, they can tunably stimulate entanglement production.
A research team at POSTECH has developed a weak-value amplification method to achieve quantum metrology precision without using entangled resources. This breakthrough enables the practical use of quantum metrology by verifying that entanglement is not an absolute requirement for reaching the Heisenberg limit.
A new theorem shows that quantum entanglement eliminates exponential overhead in training quantum neural networks, enabling scalability and reducing data requirements. This breakthrough gives hope for a quantum speedup, where quantum machines outperform classical counterparts.
The research team measured Rényi entanglement entropy at DQCP and found scaling behaviour that contradicts conventional LGW phase transition descriptions. The findings confirm a revolutionised understanding of phase transition theory and raise questions about deconfined quantum criticality.
Scientists at Georgia Tech Research Institute have demonstrated a new approach for transporting trapped ion pairs through a single laser beam to create entangled qubits. This method reduces the need for multiple optical switches and complex controls, potentially simplifying quantum systems.
Researchers have achieved 99% accuracy in quantum computing using silicon-based devices. The breakthrough enables the creation of large arrays of qubits capable of robust computations, overcoming a significant challenge in building reliable quantum computers.
Physicist Guido Pagano has won a prestigious CAREER award from the National Science Foundation (NSF) to study quantum entanglement and develop new error-correcting tools for quantum computation. He aims to understand how measurement affects entangled systems and create tools to correct errors caused by quantum decoherence.
Researchers at TU Delft and UNICAMP successfully teleported the quantum state of a single photon to an optomechanical device containing billions of atoms. This achievement paves the way for creating signal repeaters in a future quantum internet, enabling long-distance quantum communication.
Researchers from Politecnico di Torino and INRIM have developed a quantum conformance test that uses entangled light sources to accurately detect conforming or defective products. The test reduces classification errors and improves monitoring efficiency, showing promising prospects for practical applications.
Researchers at Stanford University have developed a miniaturized frequency comb that can generate non-classical light, enabling the study of quantum entanglement and opening up new pathways for quantum computing. The microcomb's precise spacing allows for detailed measurement of its finer features.
Researchers demonstrate that quantum networks' predictions differ when postulates are phrased in real numbers. The study proposes an experimental setup involving two sources and three measurement nodes, where complex quantum theory's predictions cannot be expressed by their real counterparts.
Researchers at Yokohama National University have developed an interface approach to control diamond nitrogen-vacancy centers, allowing direct translation to quantum devices. This enables remote quantum entanglement and secure information exchange over long distances.
Researchers develop novel detection method to identify high-dimensional entanglement states, overcoming challenges faced by traditional methods. The study proposes a protocol to automatically search for optimal certification methods, enabling the creation of high-dimensional quantum information processing systems.
Theorists at the University of Chicago have developed a new scheme for trapping single photons in a cavity, creating a 'wall' that prevents further photons from entering. This mechanism allows two sources to emit selected photons into a cavity before destructive interference cancels them out.