Articles tagged with Quantum Gases
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Scientists have successfully observed Shapiro steps in ultracold atoms, a quantum effect where atoms cross an extremely thin barrier without energy loss. The study provides unprecedented control over the atoms, allowing for direct probing of microscopic mechanisms and understanding how quantum behavior gives rise to macroscopic phenomena.
Researchers use ultracold atomic gases to precisely control vortices in a strongly interacting fermionic superfluid, uncovering the fundamental mechanisms that govern their behavior. The study reveals the role of quasiparticles trapped within vortex cores and opens new perspectives for understanding vortex dynamics in superfluids and s...
Researchers observe 'many-body dynamical localization' where a quantum system resists thermalization despite continuous driving. The phenomenon is crucial for building better quantum devices and simulators.
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.
Scientists at the University of Innsbruck have successfully observed emergent anyonic behavior in a one-dimensional ultracold bosonic gas. This breakthrough enables the creation of exotic quasiparticles with distinct statistical properties, which could potentially overcome limitations of current quantum processors.
A team of physicists has observed mini-tornadoes in a supersolid quantum gas, confirming the existence of quantized vortices as a hallmark of superfluidity. The discovery is significant for understanding the behavior of supersolids and their potential applications in fields like condensed matter physics.
Scientists have successfully simulated neutron star glitches using ultracold supersolids, revealing a link between quantum mechanics and astrophysics. The study sheds light on the internal structure and dynamics of neutron stars, providing valuable insights into extreme conditions.
Scientists generate multiple quasiparticles simultaneously in a quantum gas and observe their complex interactions, including attractive and repulsive behavior. Quantum statistics plays a crucial role in these interactions, which are essential for understanding fundamental mechanisms of nature.
Researchers at Weizmann Institute of Science have discovered quantum vortices in strongly interacting photons. These vortices exhibit unique properties that can be used to study the behavior of photons and their interactions with matter.
Researchers have made a quantum matter breakthrough by tuning density waves in a unitary Fermi gas, creating a new type of matter with extreme interactions. This discovery could lead to a better understanding of complex materials and potentially improve the development of quantum-based technologies.
New experiments with ultra-cold atomic gases show that quantum systems composed of many particles change over time following a sudden energy influx. The findings reveal a universality in the behavior of these systems, shedding light on how they evolve and interact.
Researchers have discovered a new phase of matter where a quantum liquid becomes solid when heated. The breakthrough was achieved through a collaboration between experimentalists and theoretical physicists, who developed a model that explains the formation of a quantum crystal at finite temperatures.
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.
The study demonstrates the universality of the Feynman-Tan relation for describing elementary excitation spectra of strongly interacting Bose gases, including those with large mass imbalances. High-order Bragg spectra are used to measure the resonance frequency shift in moderate interaction regions.
A team of researchers observed magnetically mediated hole pairing in a synthetic crystal, confirming theories that magnetic fluctuations give rise to pairing. The experiments suggest significant mobility of bound hole pairs, which could be efficient carriers of currents.
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.
Scientists at Swinburne University of Technology and FLEET collaborators observe and explain signatures of Fermi polaron interactions in atomically-thin WS2 using ultrafast spectroscopy. Repulsive forces arise from phase-space filling, while attractive forces lead to cooperatively bound exciton-exciton-electron states.
Researchers demonstrate the creation of a self-oscillating pump in a topological dissipative atom-cavity system, transporting atoms without external periodic driving. This discovery combines quantum many-body physics and open quantum systems, offering insights into exotic states of matter.
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 at Rice University have created a quantum simulator that reveals the behavior of electrons in one-dimensional wires, shedding light on spin-charge separation. The study's findings have implications for quantum computing and electronics with atom-scale wires.
A team of scientists used a quantum simulator to study the behavior of a complex quantum system, finding that it exhibits characteristics similar to fluid dynamics. The research also showed that this phenomenon can be observed in the flights of bees, as well as in unusual stock market movements.
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 at the University of Bonn have created a gas of light particles that can be extremely compressed under certain conditions. This effect is due to the 'fuzziness' of light particles, which allows them to overlap and form a quantum degenerate gas.
Researchers have observed the 'quantum boomerang effect,' a fundamental feature of localized matter that baffles classical predictions. They also report a new kicked quasicrystal and strong evidence for a real-life time crystal, produced using Google's Sycamore quantum computer.
Researchers at MIT have directly observed the interplay of interactions and quantum mechanics in a rotating fluid of ultracold atoms. The team created a spinning cloud of sodium atoms, which formed a needle-like structure before breaking into a crystalline pattern resembling miniature quantum tornadoes.
Researchers at JILA have developed a technique to extend the excited-state lifetime of atoms in a Fermi sea, allowing for improved quantum communication networks and atomic clocks. By manipulating the Pauli exclusion principle, they achieved a significant delay in spontaneous decay.
A new monitoring protocol preserves coherence in quantum Otto engines, leading to improved power output and reliability. The 'repeated contacts scheme' avoids measurement-induced quantum effects, making the engine more capable and dependable.
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 the University of Innsbruck have successfully generated a two-dimensional supersolid quantum gas, a phenomenon previously observed only in one dimension. This breakthrough enables the study of vortices forming in the hole between droplets, furthering our understanding of superfluidity and its properties.
Physicist Jean Dalibard is recognized for his exceptional contributions to the dynamism and influence of French research, particularly in quantum technologies. He has made major contributions to the emergence of quantum technologies by developing sources for atoms cooled and trapped by light,.
Researchers at Stanford University have developed a quantum Archimedes' screw that hails fragile gas atoms to higher energy states without collapsing. The discovery reveals the existence of scar states, rare trajectories in chaotic quantum systems offering protected refuge for information encoded in quantum systems.
Researchers at JILA create a dense gas of ultracold potassium-rubidium molecules, gaining control over long-distance molecular interactions. The new scheme enables exploration of exotic quantum states in which all molecules interact with each other.
Researchers have made a groundbreaking discovery about the role of heat in quantum impurity studies, extending our understanding of thermodynamics. The study reveals that two distinct experimental protocols probe the same information, providing new insights into quantum correlations.
A team of scientists has developed a novel method for measuring ultra-cold temperatures using a single, super-cooled atom as a thermometer. This technique allows for the detection of minute changes in temperature, essential for harnessing quantum technologies and reducing noise in quantum experiments.
Scientists have isolated and cooled a nanoparticle in a solid, achieving macroscopic quantum control for the first time. By removing thermal energy and isolating the particle from its environment, researchers successfully cooled the glass bead to ultra-cold temperatures near absolute zero.
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.
Researchers have observed hallmarks of supersolidity in ultracold atomic gases, featuring a self-determined crystalline structure while sharing the same macroscopic wavefunction. The dysprosium quantum gas realization shows unprecedented stability, paving the way for probing its excitation spectrum and superfluid behavior.
JILA researchers have made a long-lived, record-cold gas of molecules that follow the wave patterns of quantum mechanics. The creation of this gas boosts the odds for advances in fields such as designer chemistry and quantum computing.
Researchers at IBS confirmed wave spreading mechanisms in a cloud of quantum particles, extending computational horizons from one day to 60 years. They used novel toolbox and Discrete Time Quantum Walks for fast simulations, revealing subdiffusive cloud spreading up to record timescales.
Scientists have discovered a way to create artificial edge states in topological insulators using ultracold quantum gases in optical lattices. This breakthrough could lead to increased stability and energy efficiency in mobile devices, as well as the development of more efficient lasers.
Researchers developed a remote gaming interface that allowed external experts and citizen scientists to optimize a quantum gas experiment in real-time. The team found that collective search behavior of humans balances innovative attempts and refines existing solutions, making human problem-solving unique.
A study of ultracold atomic gases reveals the breaking of classical symmetries, leading to new phenomena and insights into dissipationless transport. The findings have significant implications for the development of future low-energy electronics.
Researchers created metastable states in an artificial quantum many-body system, observing the switching dynamics between two states. They found that thousands of atoms move through quantum tunnelling during the process.
Researchers at the University of Innsbruck have successfully detected roton excitations in a dipolar quantum gas for the first time. The discovery paves the way for further research into superfluidity and supersolid states, which exhibit both solid-like and fluid-like properties.
Researchers at Amherst College and Aalto University have created a three-dimensional skyrmion in a quantum gas, exhibiting properties similar to ball lightning. The persistence of these knots could be key to keeping plasma intact in fusion reactors.
JILA physicists have created an entirely new design for an atomic clock, packing strontium atoms into a tiny 3-D cube at 1,000 times the density of previous clocks. This approach enables a globally interacting collection of atoms to constrain collisions and improve measurements, leading to higher precision.
A quantum particle oscillates back and forth when interacting with a gas of Cesium atoms at extremely low temperatures. This behavior challenges Newton's laws of motion, as the particle's motion is restricted to the direction of the tubes.
Scientists at the University of Innsbruck have successfully observed quasiparticles forming in real-time using ultracold quantum gases. This achievement provides new insights into the dynamics of these particles, which are crucial for understanding various physical phenomena in solid-state materials and exotic states of matter.
Researchers introduce two approaches to stabilize itinerant ferromagnetic state in quantum gases, allowing for experimental detection and study of this elusive physical state. By imposing moderate optical lattices or studying cloud evolution, the methods reduce three-body recombination rates, enabling longer-lived ferromagnetic domains.
The MAINZ Graduate School of Excellence has awarded Visiting Professorships to Dieter Jaksch, a renowned theoretical physicist, and Thierry Valet, a leading industry-based physicist in spintronics. The recipients will spend up to twelve months at the graduate school, sharing their expertise with doctoral candidates.
Researchers at UC Berkeley cooled a gas to record-low entropy and temperature, allowing them to model high-temperature superconductors. This achievement could lead to the discovery of new materials with superconducting properties without requiring cooling.
Researchers have discovered a deformation of the Fermi surface in ultracold quantum gases due to anisotropic particle interactions. This deformation leads to an ellipsoidal shape, which is not spherical as predicted for isotropic interactions.
Researchers confirm existence of Efimov state, a bound state of three particles, at vast distances between particles. The state was previously elusive to prove experimentally.
Ultra-cold fermions exhibit surprisingly robust collective behavior under specific conditions. By analyzing local collisions, scientists discovered that individual properties team up coherently as a single identity in spin space at very low temperatures.
Researchers created a crystal-like arrangement of ultracold gas molecules that can swap quantum spin properties, potentially simulating or inventing exotic materials. The novel structure was achieved by manipulating the molecules' spins with microwave pulses, creating a 'superposition' of two opposite spins.
In a groundbreaking experiment, scientists detected the second sound wave in an ultracold quantum gas, validating a fundamental theory of superfluidity developed by Lev Landau. The observation was made possible by controlling and manipulating individual atoms using lasers.
Researchers have successfully realized and analyzed repulsive polarons, a new type of quasiparticle with modified properties. By controlling particle interactions, they found that these quasiparticles can exist for an almost ten times longer lifetime than previously thought.
Researchers at the University of Innsbruck have successfully produced controlled strong interactions between two fermionic elements, exhibiting analogies to the Big Bang's primordial substance. The experiment opens new avenues for investigating cosmic phenomena and novel states of matter in solid-state physics.
Scientists from the Max Planck Institute and University of Hanover generate a Bose-Einstein condensate in zero gravity, extending measurement time by over tenfold. The experiment uses an atom chip to study the effects of gravitational fields on quantum gases.
Researchers at Harvard University have tracked individual atoms as they reorganized into a crystal, driven by quantum mechanics. This achievement opens possibilities for particle-by-particle study and engineering of artificial quantum materials.