Articles tagged with Quantum States
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.
Researchers at the Flatiron Institute and Boston University have developed a new technique using tensor networks to simulate complex quantum systems, demonstrating that classical computers can tackle previously thought-to-be-solvable-only-by-quantum-computers problems. This breakthrough opens new avenues for research on quantum dynamics.
Physicists at the University of Vienna have successfully extended the lifetime of magnons, tiny waves in magnetization, to a hundredfold, paving the way for mini quantum computers. The discovery reveals that materials science is key to further progress, rather than fundamental physics.
Researchers at Oxford have demonstrated a new type of quantum interaction called quadsqueezing, a fourth-order effect that was previously unreachable. By controlling complex forms of squeezing, the team has created stronger and more accessible quantum effects for applications in simulation, sensing, and computing.
Researchers at Goethe University Frankfurt are exploring modern quantum materials, which exhibit fascinating phenomena in response to external stimuli. Olena Fedchenko investigates electronic structure and properties of these materials using various photon sources.
A team at the University of Vienna has cooled a levitated silica nanorotor to its quantum ground state in two rotational degrees of freedom, reaching the fundamental limit set by quantum uncertainty. This achievement is an important milestone towards rotational matter-wave interferometry and ultra-sensitive quantum torque sensing.
Scientists at UC Santa Barbara have developed diamond optomechanical resonators with a high quality factor, enabling long-term storage of quantum information. The resonators utilize engineered defects to host nitrogen vacancy centers, which can sense tiny magnetic fields, offering improved precision in quantum sensing.
A team of researchers has found that nonmagnetic impurities can help reveal Majorana zero modes, a promising building block for quantum computing. By shifting energy levels, these impurities make the mode's spectral peak more distinct, allowing clearer detection.
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.
A UC Santa Barbara professor's lab group has developed a way to use magnetic frustration to engineer unconventional magnetic states. These states have potential relevance for quantum technologies, including long-range entanglement of spins and ferroic responses.
A nanostructure composed of silver and an atomically thin semiconductor layer can be turned into an ultrafast switching mirror device, displaying properties of both light and matter. This discovery could lead to dramatically increased information transmission rates in optical data processing.
A team from the University of the Witwatersrand and Huzhou University discovered a vast alphabet of high-dimensional topological signatures, enabling robust quantum information encoding. This breakthrough utilizes orbital angular momentum to reveal hidden topologies in entangled photons.
Researchers from the University of Chicago have developed a high-throughput computational strategy to find ideal 2D materials and substrates for qubits. They discovered 189 materials that could potentially support coherence times longer than those of diamond, including WS2 and Au-oxyselenides.
Researchers create nanoscale slots to tune phonon vibrations, enabling ultrastrong coupling and hybrid quantum states in lead halide perovskite. This breakthrough could improve energy flow and performance in optoelectronics.
Qiong Ma, Assistant Professor of Physics at Boston College, has been selected as a 2025 Moore Inventor Fellow for her groundbreaking work on twistronic artificial synapses. The fellowship award comes with $675,000 over three years and will support the purchase of new scientific equipment and funding for postdocs and student researchers.
Researchers at TU Wien have created a new type of time crystal through the interaction of particles in a two-dimensional lattice held by laser beams. The emergence of this phenomenon challenges previous thought that quantum fluctuations could only hinder the formation of time crystals.
Scientists have successfully demonstrated quantum squeezing of a nanoscale particle, achieving motion uncertainty smaller than quantum mechanical fluctuations. This achievement paves the way for basic research and applications like autonomous driving without GPS.
Researchers at Washington University in St. Louis have created quantum sensors that can measure stress and magnetism in materials under pressure exceeding 30,000 times the atmospheric pressure. These breakthrough sensors offer a new frontier for studying high-pressure phenomena in fields like astronomy, geology, and superconductivity.
Kyoto University researchers successfully developed an entangled measurement method for the W state, enabling efficient identification of entangled states. The team used a photonic quantum circuit and demonstrated its feasibility with three-photon W states.
Researchers discovered a new in-between quantum state with a power law decay, which could make accessing these states easier and more reliable. This breakthrough opens up novel concepts for fundamental physics and potential applications in emerging fields like quantum computing.
Researchers have demonstrated a type of quantum logic gate that drastically reduces the number of physical qubits needed for its operation. The Gottesman-Kitaev-Preskill (GKP) code has been translated into a physical reality, allowing for the first realisation of a universal logical gate set for GKP qubits.
The study highlights how machine learning offers adaptive, data-driven alternatives for precise control and accurate characterization of quantum systems. Tools like neural networks and attention-based architectures have shown promise for quantum tomography.
Researchers at Max Planck Institute successfully couple spatially separated molecules via a modified vacuum field in an optical microresonator. This breakthrough enables the creation of synthetic states of coupled molecules, with potential applications in quantum technology and information processing.
Researchers at Rice University have demonstrated a strong form of quantum interference between phonons, revealing record levels of interference. The breakthrough could lead to new technologies in sensing, computing, and molecular detection.
Scientists at Goethe University Frankfurt have directly measured the correlated zero-point motion of a molecule's atoms for the first time, revealing complex patterns of vibrational modes. The experiment uses Coulomb Explosion Imaging to generate high-resolution images of the molecule's structure.
Scientists have achieved a high level of quantum purity in nano glass spheres, eliminating gravitational force and detecting zero-point fluctuations. This breakthrough enables the development of quantum sensors and technological applications at room temperature.
Researchers at Yonsei University have successfully measured the full quantum metric tensors of Bloch electrons in solids, a breakthrough that could lead to advanced semiconductor technologies and higher transition-temperature superconductors. The study used black phosphorus as a representative material for photoemission measurements.
Researchers at Penn State have demonstrated how gold nanoclusters can mimic the spin properties of trapped atomic ions, allowing for scalability in quantum applications. The clusters can be easily synthesized in large quantities and exhibit unique Rydberg-like spin-polarized states that mimic superpositions.
Researchers successfully confirmed long-standing 'electron tunneling' phenomenon, revealing surprising interactions between electrons and atomic nuclei during tunneling. The study's findings have significant implications for advanced technologies like semiconductors, quantum computers, and ultrafast lasers.
Professor Roberto Morandotti has won the 2025 IEEE Photonics Society Quantum Electronics Award for his groundbreaking research on entanglement generation and processing of complex quantum states in photonic devices and systems. His work at INRS's Ultrahigh Speed Light Manipulation Laboratory has led to numerous patents and collaboratio...
Researchers have identified a three-dimensional quantum spin liquid in cerium zirconate, exhibiting emergent photons and fractionalization. This discovery could lead to breakthroughs in superconductors and quantum computing.
Researchers from The University of Osaka develop a method to prepare high-fidelity 'magic states' for use in quantum computers with less overhead and unprecedented accuracy. This breakthrough aims to overcome the significant obstacle of noise in quantum systems, which can ruin computer setups.
Physicists at the University of Colorado Boulder have developed a new type of atom interferometer that can measure acceleration in three dimensions. The device, which employs six lasers and artificial intelligence, has the potential to revolutionize navigation technology by providing accurate measurements in complex environments.
Scientists from Harvard University and PSI have developed a method to stabilize transient quantum states in materials using tailored optical excitation. This breakthrough enables the study of emergent properties of quantum materials, paving the way for transformative technologies such as lossless electronics and high-capacity batteries.
Researchers have developed a new type of exotic quantum material that can maintain its quantum properties when exposed to external disturbances, paving the way for robust quantum computers. The breakthrough uses magnetism to create stability, making it an important step towards realising practical topological quantum computing.
Researchers at Princeton University uncover a hidden chiral quantum state in KV₃Sb₅, a Kagome lattice topological material. The discovery sheds light on an intense debate within the physics community and expands our understanding of quantum phenomena.
Researchers have demonstrated a new quantum sensing technique that surpasses conventional methods by counteracting the limitation of decoherence. The study's coherence-stabilized protocol allows for improved sensitivity and detection of subtle signals, with up to 1.65 times better efficacy per measurement.
Researchers at Peking University have reported the first observation of non-reciprocal Coulomb drag in Chern insulators, revealing new insights into topological quantum materials and quantum fluctuations. The study enhances our understanding of quantum states in magnetic topological systems.
Researchers at Columbia University have discovered over a dozen new quantum states in twisted molybdenum ditelluride, which can be created without an external magnet. These states hold promise for building topological quantum computers with unique properties that could reduce errors and improve performance.
Researchers have found a rare form of one-dimensional quantum magnetism in the metallic compound Ti₄MnBi₂, offering evidence into a previously theoretical phase space. The discovery bridges the gap between traditional magnetic insulators and complex electronic systems.
A team of theoretical physicists from Colorado designed a new type of quantum game that scientists can play on a real quantum computer. The researchers tested their game out on the Quantinuum System Model H1 Quantum Computer, highlighting its potential capabilities.
Scientists from University of Innsbruck successfully created hot Schrödinger cat states at temperatures up to 1.8 Kelvin, challenging the notion that high temperature destroys quantum effects. This breakthrough opens new opportunities for quantum technologies in warmer environments.
The thorium-229 nuclear optical clock has the potential to achieve a very high-precision time and frequency standard due to its unique properties. Despite significant progress, numerous challenges remain, including temperature sensitivity and the scarcity of the isotope.
Physicists at Washington University in St. Louis have created a novel phase of matter called a time quasicrystal, which vibrates at precise frequencies over time. The researchers built the quasicrystals inside a diamond chunk using powerful nitrogen beams and microwave pulses.
A German-Italian team has discovered a way to simplify the experimental implementation of two-dimensional electronic spectroscopy, allowing for real-time study of electron motion in solids. By adding an optical component to Cerullo's interferometer, researchers were able to control laser pulses more precisely, enabling the investigatio...
Physicists at the University of Cologne have successfully observed Crossed Andreev Reflection in TI nanowires, a crucial step toward engineering Majorana-based qubits. This breakthrough enables reliable control over superconducting correlations in topological insulator nanowires.
Researchers at Osaka Metropolitan University developed new formulas to calculate key quantum informative quantities, including entanglement entropy and mutual information. These simplified expressions offer fresh perspectives into quantum behaviors in materials with different physical characteristics.
The discovery of chromium sulfide bromide's magnetic properties enables the confinement of excitons to a single line, confining quantum information for longer periods. This could be a game changer for future electronics and information technology, enabling applications in quantum computing and sensing.
For the first time, scientists have measured the quantum state of electrons ejected from atoms after absorbing high-energy light pulses. This technique provides a new way to study the interaction between light and matter, with potential applications in various fields of research.
Researchers at Johannes Gutenberg University Mainz are working on a subproject to investigate theoretical modeling and experimental realization of concepts for quantum repeaters. They aim to reduce transmission losses and generate high-quality quantum states to build secure quantum networks.
Researchers at MIT and Harvard University have directly measured superfluid stiffness in magic-angle graphene for the first time, shedding light on its remarkable properties. The study suggests that quantum geometry governs the material's superconductivity, a key step toward understanding its exceptional properties.
Researchers at TU Wien discovered a new energy band that remains connected by an 'umbilical cord' when one allowed energy range splits into two separate bands. This phenomenon is bound to occur in materials with large electron interaction, opening up a new perspective on technologically highly interesting classes of materials.
The discovery of a '1/3' fractional quantum Hall state in twisted graphene could lead to the development of more efficient electronic devices. The researchers used a unique structure comprising two slightly twisted layers of graphene, observing new patterns that create different rules for governing electron movement.
Researchers at Queen Mary University of London have discovered a surprising connection between the Large Hadron Collider and the future of quantum computing. The study reveals that top quarks produce
Scientists successfully prepared six mechanical oscillators in a collective state, observing phenomena that emerge when oscillators act as a group. The research demonstrates experimental confirmation of theories about collective quantum behavior, opening new possibilities for quantum sensing and generation of multi-partite entanglement.
Scientists successfully produced and controlled hybrid electron-photon quantum states in helium atoms, enabling direct manipulation of these transient states. This breakthrough uses a new laser pulse-shaping technique and high-intensity extreme ultraviolet light pulses to achieve control over the hybrid quantum states.
German physicist Christian Schneider has been awarded a European Research Council Consolidator Grant to study the optical properties of two-dimensional materials. His team plans to develop experimental set-ups to investigate the unique properties of these materials, which could lead to new applications in quantum technologies.
Researchers developed innovative encoding methods that simplified quantum circuits for data encoding, reducing circuit depth by a factor of 100 while maintaining accuracy. These methods showed improved resilience against adversarial attacks, paving the way for practical application of quantum machine learning on current devices.