Articles tagged with Bose Einstein Condensates
A Stanford-led team created a quantum-optical spin glass to increase AI memory capacity. The network, called a quantum-optical spin glass, has a greater capacity to hold and recall memories than traditional AI networks, exhibiting short-term plasticity similar to the brain's synaptic connections.
Researchers have successfully generated atomic quantum gas mixtures with unprecedented particle flux using a highly sophisticated and compact optical system. The miniaturized laser system developed by Mainz physicists enables precise control of atoms under microgravity conditions, opening doors for future space missions.
A team of researchers has observed the Einstein–de Haas effect in a Bose–Einstein condensate, demonstrating the transfer of angular momentum from atomic spins to fluid motion. This finding highlights the conservation of angular momentum between microscopic spin and macroscopic mechanical rotation in the quantum world.
Researchers at ICFO have successfully created a supersolid state of matter by coupling ultracold potassium atoms to light, directly imaging the crystal-like structure and its oscillating spacing. The team observed stripes forming and vanishing as the cloud size expanded or shrunk, behavior related to its superfluid nature.
Researchers at the University of Bonn have successfully created a Bose-Einstein condensate on a super photon using tiny nano molds. This allows for the shaping of light into a simple lattice structure, which could be used to make information exchange between multiple participants tap-proof.
Scientists have created perovskite crystals with predefined shapes to serve as waveguides, couplers, and modulators in integrated photonic circuits. The edge lasing effect is associated with exciton-polariton condensates, which exhibit nonlinear effects, enabling applications in quantum computing.
Scientists have developed a method to simulate gravitational waves in the lab using cold atoms, a phenomenon similar to gravitational waves. This breakthrough allows for easier study and understanding of these cosmic waves, which are challenging to detect.
Researchers at the University of Bonn have demonstrated that photon Bose-Einstein condensates obey a fundamental theorem of physics. By applying gentle and strong perturbations to the condensate, they showed that it responds in the same way as to random fluctuations without a perturbation.
Researchers at Columbia University have successfully created a unique quantum state of matter called a Bose-Einstein Condensate (BEC) out of molecules. The breakthrough, achieved by cooling sodium-cesium molecules to just five nanoKelvin, has the potential to advance powerful quantum simulations and unlock new areas of research.
A new technique has been developed to cool quantum simulators, allowing for more stable experiments and better insights into quantum effects. By splitting a Bose-Einstein condensate in a specific way, researchers can reduce temperature fluctuations and enhance the performance of quantum simulators.
An international team has gained insights into special states of matter through experiments at BER II, finding a spin-nematic phase formed under extreme magnetic fields. The results suggest a condensate of bosonic Cooper pairs, analogous to superconductivity.
Scientists from CNR Nanotec and the University of Warsaw created a new method to simulate interactions between artificial atoms by forming macroscopic coherent states. They used optically tailored quantum droplets of light that became bound together, enabling stable and long-lived polariton fluids with unprecedented coherence scales.
Researchers on the International Space Station produced a quantum gas containing two types of atoms for the first time in space. This achievement enables studying quantum chemistry, which focuses on how different atoms interact and combine with each other.
Researchers at Lancaster University have discovered how energy disappears in quantum turbulence, a crucial step towards mastering this phenomenon and its applications. The study reveals the role of Kelvin waves in transferring energy from macroscopic to microscopic length scales.
Researchers developed a new method to distinguish current carriers in the BCS-BEC crossover, a phase transition between superfluids and superconductors. The team measured fluctuations of currents, quantified as the Fano factor, which can identify single-particle- and pair-currents.
Physicists at the University of Bonn have experimentally proven the applicability of the fluctuation-dissipation theorem to Bose-Einstein condensates made of photons. The study reveals a direct relationship between fluctuation and sensitivity, enabling precise temperature determination in complex photonic systems.
Researchers have created a structure of linked vortices that cannot break apart due to their fundamental properties. This discovery has implications for quantum computing and particle physics, and could lead to more accurate logical operations in topological quantum computing.
Scientists at the University of Innsbruck have developed a new method to observe and study ultra-cold mini twisters, quantized vortices that form in dipolar quantum gases. These vortices are a strong indication of superfluidity, a frictionless flow characteristic of certain quantum gases.
Researchers from University of Warsaw create spiking neuron using photons to mimic biological brain's behavior. This achievement paves the way for photonic neural networks that process information faster and more efficiently than conventional systems.
Australian researchers have engineered a quantum box for polaritons in a two-dimensional material, achieving large polariton densities and a partially 'coherent' quantum state. The novel technique allows researchers to access striking collective quantum phenomena and enable ultra-energy-efficient technologies.
Researchers have created and observed novel vortices in an ultracold gas, exhibiting unexpected properties due to hidden discrete symmetries. The discovery may lead to breakthroughs in quantum computing and information processing.
Physicists from the University of Amsterdam successfully created a continuous Bose-Einstein Condensate, enabling an eternal atom laser that can produce coherent matter waves. This breakthrough solves the problem of fragile BECs and paves the way for technical applications.
A new study proposes a mathematical tool to understand the fractal structure of quark-gluon plasma, which is formed in high-energy collisions. The fractal structure explains some phenomena seen in these collisions, including particle momentum distributions that follow Tsallis statistics.
Scientists confirm observations of quantized vortices in superfluid helium by simulating quantum vortex dynamics with silicon nanoparticles, revealing new possibilities for optical research. The study enables visualization of quantized vortex reconnection, a key feature of superfluid helium at macroscopic scales.
Researchers at Osaka University used silicon nanoparticles to visualize the coalescence of quantized vortices in superfluid helium. This technique enables better understanding of quantum fluids and materials, including superconductors. The study also opens up new possibilities for optical research on other quantum properties.
Scientists have discovered a new type of skyrmion with half-integer topological numbers in a ferromagnetic superfluid, challenging the current understanding of these phase defects. This discovery could lead to a major breakthrough in skyrmion research and its applications in particle physics and spintronics.
Researchers have developed a novel magnetometer that achieves an unprecedented level of sensitivity, detecting tiny magnetic fields that were previously undetectable. The breakthrough uses a single-domain Bose-Einstein condensate made of rubidium atoms at ultracold temperatures.
A collaborative research project on quantum technology has started on the International Space Station (ISS), utilizing ultracold atoms to conduct fundamental research and develop future quantum sensors. The BECCAL experiment is a multi-user platform open to international scientists, allowing them to test their ideas in practice.
Physicists at the University of Queensland have developed a comprehensive understanding of vortex pinning and unpinning in two-dimensional superfluids. The study reveals four regimes governing these interactions, including a 'pair creation' regime where vortices are pinned to defects.
Researchers at Washington State University have created a technique to observe matter wave caustics in atom lasers, resulting in curving cusps or folds. These findings have potential applications for highly precise measurement and timing devices, including interferometers and atomic clocks.
Researchers have successfully demonstrated laser emission from ultra-thin crystals consisting of three atomic layers, a breakthrough that could lead to miniaturized circuits and future quantum applications. The discovery showcases the potential of these materials as a platform for new nanolasers capable of operating at room temperature.
Scientists from Skoltech and the University of Southampton created an all-optical lattice that houses polaritons, quasiparticles with half-light and half-matter properties. They demonstrated breakthrough results for condensed matter physics and flatband engineering.
A new optical switch created by an international team could replace electronic transistors in computers, manipulating photons instead of electrons. The device requires no cooling and is fast, with operations per second between 100 and 1,000 times faster than current commercial transistors.
A new Australian study examines systems transitioning from a normal fluid to a quantum state known as a superfluid, which can flow with zero friction. The research provides new insights into the formation of these remarkable states, revealing different timescales and correlations involved.
Researchers at TU Wien have invented a new cooling concept that combines thermodynamics and quantum physics to break low-temperature records. By using quantum effects to cool a cloud of ultracold atoms, they achieved temperatures closer to absolute zero than ever before.
Exciton-polaritons exhibit non-linear effects, including Bose-Einstein condensation and polariton lasing without occupation inversion. The study reveals energy-degenerate parametric scattering of polaritons and opens up new avenues for research on multi-level polariton systems.
A novel alternative mechanism to achieve superconductivity in graphene has been discovered by researchers at the Center for Theoretical Physics of Complex Systems. This breakthrough involves interactions between electrons and bogolons, which can confer superconductivity up to 70 Kelvin within graphene.
New research adds lattice potential to quantum droplet analysis, producing stable fundamental and vortical modes. The study improves understanding of BEC dynamics and opens door for new species creation.
Researchers at UChicago have successfully brought multiple molecules into a single quantum state, a major technological feat. This achievement has the potential to open new fields in quantum physics and chemistry, enabling innovative applications such as unhackable networks and earthquake sensors.
Researchers at the University of Bonn have discovered a new phase transition in an optical Bose-Einstein condensate of light particles. The overdamped phase exhibits unique properties that could be used to transmit quantum-encrypted messages between multiple participants.
Scientists have demonstrated a novel material that exhibits superconductivity in the form of a Bose-Einstein condensate (BEC), bridging a gap between two previously thought incompatible methods. This breakthrough could lead to new understanding and applications of superconduction, including potentially room-temperature devices.
Researchers have created a metal-like quantum gas by exciting electrons in ultracold rubidium atoms, allowing for ultrafast simulation of many-body electron dynamics. The exotic phase has the potential to enhance our understanding of physical properties like superconductivity and magnetism.
A team of scientists at Aalto University has successfully created a Bose-Einstein condensate that behaves as if it were one particle, but makes the elusive state of matter in just 100 femtoseconds. The breakthrough could lead to new areas of fundamental research and applications with these condensates.
Physicists from Martin Luther University Halle-Wittenberg propose a new theory to describe Bose-Einstein condensates, overcoming complex equations and models. The new method simplifies interactions between particles in the condensate, enabling accurate predictions of their behavior.
Scientists discovered a theoretical breakthrough in quantum fluid rotation, revealing a corkscrew-shaped mechanism that drives the fluids into rotation without viscosity. This phenomenon allows superfluids to transfer angular momentum through quantum mechanical interactions.
Researchers at ICFO have successfully searched for axions, hypothetical particles thought to make up 80% of the universe's mass, using a new technique involving Bose-Einstein condensates. The study confirms the ability to detect short-range spin-dependent forces with much shorter ranges than previous experiments.
Researchers achieved a novel quantum state of magnons at room temperature, defying theory. The condensate behaves in a repulsive manner, keeping it stable and relevant for future information technologies.
Physicists create Bose-Einstein condensate by rapidly cooling magnons to room temperature, eliminating the need for complex equipment and achieving a long-sought goal in quantum physics research. The discovery has significant implications for advancing quantum computing at room temperature.
Researchers have observed 'quantum depletion' in a non-equilibrium Bose-Einstein condensate, discovering that 'light-like' condensates don't behave as expected. The team detected 'ghost excitations' arising from quantum depletion, resolving a long-standing problem in exciton-polariton condensates.
Calculations by Allen Mills predict the existence of stable positronium bubbles in liquid helium, which could lead to the creation of gamma-ray lasers. Such lasers have applications in medical imaging, spacecraft propulsion, and cancer treatment.
Researchers at Rice University and Austria's Vienna University of Technology shatter ultracold BECs, revealing two distinct phenomena depending on the frequency of shaking. The team observes grains of varying sizes in some experiments, attributed to quantum correlations that challenge standard theories.
Researchers created a new testing ground for quantum systems to study spin current decay and its effects on spintronics. This breakthrough may lead to advances in computing and electronic devices that use spin instead of electrons' charge.
Experiments with Bose-Einstein condensates and optomechanical cavities reveal an increase in irreversibility due to quantum fluctuations. This counterintuitive discovery challenges current understanding of entropy production.
Researchers from HZDR found that Bose-Einstein condensates, which can be thought of as heavily diluted vapor from individual atoms cooled to extreme temperatures, are not sensitive enough to detect gravitational waves. The team discovered that the power of these gravitational waves is too weak to be measured using current methods.
A team of scientists has successfully generated a Bose-Einstein condensate in space, opening up new possibilities for high-precision measurements in zero gravity. The condensate can be used to measure the Earth's gravitational field, detect gravitational waves, and test Einstein's equivalence principle with unprecedented accuracy.
Researchers developed a mathematical model describing motion of dark matter particles inside the smallest galaxy halos. They observed that over time, dark matter may form spherical droplets of quantum condensate. The study found that Bose-Einstein condensate can form in the centres of small halos, and it may produce Fast Radio Bursts.
Researchers created a system with just seven photons and found that phase transitions occur in these small systems, allowing for the study of quantum properties. This discovery has potential applications in measurement or sensing, as well as exploring properties at the smallest scale when phase transitions occur.
Researchers created an antilaser for nonlinear Bose-Einstein condensate of ultracold atoms, demonstrating perfect absorption without reflection. The breakthrough can be used to manipulate superfluid flows and study nonlinear optical systems.
Scientists at ETH Zurich develop a controlled quantum system with two coupled order parameters, enabling the creation of diverse phase diagrams and exploring complex interactions. The platform provides a unique tool for studying technologically relevant materials and simulating their properties.
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.