Articles tagged with Quantum Entanglement
A team from Argonne National Laboratory has extended the coherence time for a novel type of qubit to nearly 1,000 times better than the previous record. This achievement enables the qubit to perform thousands of operations with high precision and speed.
Researchers at the University of Cambridge have shown that simulating models of hypothetical time travel can solve experimental problems in quantum metrology. By manipulating entanglement, they can retroactively change past actions to improve outcomes in the present. The simulation has a 75% chance of failure but provides valuable insi...
A Harvard team has successfully developed a self-correcting quantum computer using neutral atom arrays, achieving near-flawless performance with extremely low error rates. The breakthrough enables the creation of large-scale, error-corrected devices based on neutral atoms.
A team of researchers has made the first demonstrations of identifying and removing 'erasure' errors in quantum computing systems. By pinpointing and correcting for these mistakes, they can improve the overall rate of entanglement, or fidelity, in Rydberg neutral atom arrays.
Researchers create an ultrafast quantum simulator that can simulate large-scale quantum entanglement on a timescale of several hundred picoseconds. By applying their novel ultrafast quantum computer scheme, they overcome the issue of external noise and achieve high speed and accurate controls.
Researchers developed an entanglement witness circuit to detect qubit entanglement in cloud-based services, overcoming limitations and enabling users to test for entangled qubits. The new framework EW 2.0 is twice as efficient at detecting entanglement.
Researchers at Brown University have made significant breakthroughs in understanding quantum spin liquids by studying the effects of disorder on these exotic materials. The study reveals that disorder does not destroy or mimic the quantum liquid state but rather significantly alters it.
Researchers have demonstrated a way to perform Bell-state measurements with an efficiency exceeding the commonly assumed upper theoretical limit. This breakthrough opens up new perspectives for photonic quantum technologies and could lead to more efficient quantum computing, communication, and sensor devices.
Researchers have generated nearly deterministic OAM-based entangled states using QDs, enabling hybrid entanglement states in high-dimensional Hilbert spaces. This breakthrough offers a bridge between photonic technologies for quantum advancements.
Scientists at the University of Innsbruck improved atomic clock accuracy by using finite-range interactions to create entanglement, reducing measurement errors by roughly half.
Researchers from Aalto University have successfully detected a triplon, a quantum entanglement wave, in an artificial quantum magnet created using small organic molecules. This achievement marks the first direct observation of triplons using real-space measurements.
Researchers from Hiroshima University found that measurements shape observable reality, suggesting a context-dependent understanding of quantum superpositions. This approach resolves the paradox of conflicting results in quantum experiments and provides evidence against reducing reality to material building blocks.
Researchers have identified a mechanism explaining the characteristic properties of strange metals, which operate outside normal rules of electricity. The theory combines two properties: electron entanglement and nonuniform atomic arrangement, resulting in electrical resistance.
Theoretical physicists at Los Alamos National Laboratory have developed a new quantum computing paradigm that uses natural quantum interactions to process real-world problems faster than classical computers. The approach eliminates many challenging requirements for quantum hardware.
A new technique enables fast and efficient reconstruction of the full quantum state of entangled particles. By analyzing coincidence images, researchers can reconstruct the unknown wave function, enabling faster and more accurate characterization of quantum systems.
Researchers have found that certain materials can exhibit D-wave effects, entangled with other quantum states, allowing for efficient coupling at higher temperatures. This breakthrough bridges condensed matter physics subfields and could enable practical applications of quantum computing.
Researchers from the University of Rochester have made an important step toward developing computers advanced enough to simulate complex natural phenomena at the quantum level. They developed a new chip-scale optical quantum simulation system that could help make such a system feasible, using photonics-based synthetic dimensions.
Researchers developed a new technique called zero noise extrapolation (ZNE) that allows noisy quantum computers to produce accurate results for specific calculations. This breakthrough could enable the use of quantum computing for cutting-edge physics problems and improve classical algorithms.
The team used an acoustic beamsplitter to demonstrate the quantum properties of phonons, showing they can be split and create interference between two phonons. This breakthrough is a crucial step toward creating a linear mechanical quantum computer using phonons instead of photons.
Researchers at the University of Oklahoma demonstrate a new method for secure information transfer using spatial correlations in quantum entangled beams of light. The study successfully encodes information into recognizable images, which can only be retrieved by joint measurements of the two entangled beams.
Researchers at USTC successfully generated cryogenic integrated quantum entangled light sources using spontaneous four-wave mixing effect, enabling scalable quantum information applications. The study also explored noise mitigation and frequency-multiplexed energy-time entangled states.
Researchers at the University of Innsbruck have created a fully functioning quantum repeater node, enabling entanglement creation and swapping over 50 kilometers. This breakthrough demonstrates the feasibility of connecting distant cities through secure, high-performance quantum communication networks.
Entangling low-energy microwave with high-energy optical photons is a crucial step to overcome challenges in scaling up existing quantum hardware. The achievement has implications for realizing interconnects to other quantum computing platforms and novel quantum-enhanced remote sensing applications.
A new source-device-independent quantum random number generator (QRNG) protocol has been developed, operating securely and independently of source devices. This allows for practical applications in secure quantum information tasks, with a reported generation rate of 4 megabits per second.
Researchers at Caltech have developed a technique that uses quantum entanglement to create biphotons, which can be used to image cells with a resolution twice that of traditional microscopes. By harnessing the properties of quantum entanglement, scientists can now visualize tiny structures within living cells with unprecedented precision.
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.
A Brazilian-Chinese research team has demonstrated the coexistence of non-locality and contextuality in a quantum system. The study paves the way for new quantum information processing and communication protocols by reconciling two fundamental principles of quantum theory that were thought to be mutually exclusive.
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.
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 at ICFO have successfully teleported quantum information over 1km using a multiplexed quantum memory. The technique enables fast and reliable quantum communication over long distances, with potential applications in secure telecommunications.
Researchers found that two outermost electrons from each nickel ion behaved differently, cancelling each other out in a phenomenon called a spin singlet. This led to the discovery of two families of propagating waves at dramatically different energies, contradicting expectations of local excitations.
A team of researchers at Vienna University of Technology and Toho University in Japan investigated the electrical resistance of κ-(BEDT-TTF)2Cu2(CN)3 as a function of temperature and pressure. They found that the material exhibits properties similar to those of helium-3, contradicting the theory of a quantum spin liquid.
Researchers at Leibniz University Hannover have developed an entangled quantum light source fully integrated on a chip, overcoming challenges of size, stability and reproducibility. The new development enables scalability for real-world applications like quantum processors.
Researchers developed an all-optical quantum state sharing protocol that uses continuous variable systems to share secret information between multiple parties. The new method successfully implemented in a low-noise amplifier and demonstrated higher average fidelity than classical limits.
Researchers use novel method to map gluons in nuclei by tracking particle interactions, offering insights into proton and neutron structure. The technique has potential applications in harnessing quantum entanglement.
Researchers develop new way to generate squeezing that overcomes fundamental quantum imprecision, enabling more precise atomic clocks and improved quantum sensors. The new approach leverages bosonic pair creation and enables entangled states with minimal fuss, reducing experimental challenges.
Physicists at Rice University have found that magnetism subtly modifies the landscape of electron energy states in iron-germanium crystals, promoting and preparing for the formation of a charge density wave. This is one of the few known examples of a kagome material where magnetism forms first, leading to charges lining up.
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 ...
Scientists at Ohio State University have made a groundbreaking discovery, allowing them to view inside the deepest recesses of atomic nuclei. By studying how different types of particles interact with each other, they were able to map the arrangement of gluons within atomic nuclei with unprecedented precision.
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.
Researchers at the University of Innsbruck have successfully entangled two trapped ions separated by 230 meters, using photons transmitted through an optical fiber cable. This breakthrough demonstrates the potential of trapped ions as a platform for building future quantum networks and distributed computing systems.
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.
Scientists have found that manipulating entanglement in quantum systems is inherently irreversible, ruling out the possibility of a second law. This means that entanglement entropy cannot fully recover invested entanglement, making it impossible to transform states back and forth.
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.
Physicists have discovered a way to observe quantum interference between dissimilar particles, allowing for the creation of high-precision images of gluon distributions within atomic nuclei. This technique enables researchers to better understand the force holding quarks and gluons together in atomic nuclei.
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 have developed a quantum experiment that allows them to probe connections between theoretical wormholes and quantum physics. The study demonstrates the equivalence of wormholes with quantum teleportation, a process experimentally demonstrated over long distances.
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.
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.
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.
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.