Articles tagged with Ultracold Atoms
Researchers discovered a maximum amount of electrical resistance that can occur due to electron collisions, offering insights into what causes resistivity at the microscopic level. The study found that when interactions between atoms become too strong, the resistivity caused by collisions eventually stops rising and saturates.
A University of Birmingham scientist creates a 'mini universe' with ultracold atoms to test ideas in quantum cosmology and gravity. The experiment demonstrates that time can emerge from changes within a quantum system, revealing a version of time known as 'entropic time', which flows consistently and orders events.
Researchers from ISTA have explained the unusual superconducting behavior of UTe2, a material that exhibits zero electrical resistance under specific magnetic field conditions. By studying magnetic fluctuations, they revealed a new mechanism behind reentrant superconductivity, shedding light on this enigmatic phenomenon.
Researchers at CNR-INO observed capillary instability in an ultradilute quantum gas, creating a new form of matter with potential implications for industrial and biomedical applications. The study, published in Physical Review Letters, involved the use of imaging and optical manipulation techniques to create and analyze quantum droplets.
Researchers at University of Liège have developed a method for rapidly creating NOON states with ultra-cold atoms, accelerating the process by a factor of 10,000 while maintaining high fidelity. This breakthrough opens up prospects in quantum metrology and quantum information technologies.
Researchers from the University of Warsaw discovered an unexpected order in interatomic collisions, allowing for controlled interactions at higher temperatures. This breakthrough could simplify future experimental realizations and shed light on fundamental questions about quantum and classical worlds.
Researchers from the University of Cambridge have created a 2D version of the Bose glass, a novel phase of matter that challenges traditional statistical mechanics. The new phase exhibits non-ergodic behavior, meaning it retains its details, and has potential applications in quantum computing.
Researchers at MIT have directly observed edge states in a cloud of ultracold atoms, capturing images of atoms flowing along a boundary without resistance. This discovery could enable super-efficient energy transmission and data transfer in materials.
Physicists from Princeton University have discovered the microscopic basis of kinetic magnetism, a novel form of quantum magnetism. They directly imaged the unusual type of polaron that gives rise to this magnetism, using ultracold atoms in an artificial laser-built lattice.
Researchers demonstrate novel method of boson sampling using ultracold atoms in a two-dimensional optical lattice, overcoming previous limitations in simulations and photon-based experiments. The achievement showcases the potential of quantum devices for performing non-classical computational tasks.
MIT physicists arrange dysprosium atoms as close as 50 nanometers apart, a limit previously set by the wavelength of light. This allows for enhanced magnetic forces, thermalization, and synchronized oscillations, opening new possibilities for studying quantum phenomena.
The Institute for Molecular Science (IMS) is accelerating the development of novel quantum computers based on 'cold (neutral) atom' technology, leveraging expertise from 10 industry partners. The partnership aims to launch a start-up company and develop practical applications of quantum computers by end FY2024.
A team of scientists from Bar-Ilan University found that Efimov trimers, weakly-bound three-atomic molecules, display surprising resistance against breaking apart even when immersed in the continuum. The study sheds light on a fundamental aspect of quantum mechanics and challenges existing paradigms.
Researchers visualize second sound, a wave-like movement of heat, independent of physical particle motion in a superfluid. The findings expand understanding of heat flow in superconductors and neutron stars.
Researchers at Rice University have developed a new experimental technique that preserves quantum coherence in ultracold molecules for a significantly longer time. By using a specific wavelength of light, the 'magic trap' delays the onset of decoherence, allowing scientists to study fundamental questions about interacting quantum matter.
A Harvard University team has created the world's first logical quantum processor, which can encode up to 48 logical qubits and execute hundreds of gate operations. This breakthrough is a significant step toward reliable quantum computing and fault-tolerant quantum computation.
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.
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.
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.
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.
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.
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.
Researchers at MIT have taken the first direct images of fermion pairs in a cloud of atoms, shedding light on how electrons form superconducting pairs that glide through materials without friction. The observations provide a visual blueprint for how electrons may pair up in superconducting materials.
Researchers found that iron selenide undergoes a collective shift in orbital energy during the nematic transition, rather than coordinated spin shifts. This discovery opens up new avenues for discovering unconventional superconductors and improving existing materials.
Researchers have successfully created and visualized a Laughlin state using ultracold neutral atoms in an optical box. The experiment demonstrated the peculiar 'dance' of particles and their fractional charge, opening up new possibilities for exploring exotic states in quantum simulators.
An international research team has confirmed for the first time that mutual information in a many-body quantum system scales with surface area rather than volume. The experiment used ultracold atoms and a special tomography technique to measure the shared information.
Researchers at MIT have observed a rare resonance in colliding ultracold molecules for the first time, shedding light on the forces that drive molecules to chemically react. The discovery could lead to new ways to steer and control certain chemical reactions using magnetic fields.
The team isolated pairs of atoms within a 3D optical lattice to measure the strength of their mutual interaction. They confirmed a longstanding prediction that the p-wave force between particles reached its maximum theoretical limit.
A research team from USTC successfully created ultracold triatomic molecular gas with high phase-space density using adiabatic magneto-association. The achievement has great application prospects in ultracold chemistry and material designs, and enables the simulation of complex chemical reactions.
Researchers use lasers to cool atoms to absolute zero, revealing new phenomena in an unexplored realm of quantum magnetism. The creation of SU(N) matter opens a gateway to understanding the behavior of materials and potentially leading to novel properties.
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.
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 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.
Researchers at Dartmouth have built the world's first superfluid circuit using pairs of ultracold electron-like atoms, allowing for controlled exploration of exotic materials like superconductors. The circuit enables analysis of electron movement in highly controllable settings.
Rice University physicists have developed a technique to engineer Rydberg states of ultracold strontium atoms, creating 'synthetic dimensions' that simulate real materials. This breakthrough enables the creation of interacting particles in a controlled environment, paving the way for new physics and material properties.
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 MIT have discovered a new type of qubit, where vibrating pairs of fermions can exist in two states at the same time. The qubits can maintain this state for up to 10 seconds, making them a promising foundation for quantum computers.
Scientists at the University of Missouri study photodissociation reactions on the quantum level, revealing strong quantum effects that challenge classical 'billiard-ball' models. The research could lead to a better understanding of atmospheric chemistry and develop new theoretical frameworks.
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.
A team at Heidelberg University has successfully demonstrated a programmable control of spin interactions in isolated quantum systems. By adopting methods from nuclear magnetic resonance, the researchers used microwave pulses to modify the atomic spin and stall its reorientation. This breakthrough opens up new possibilities for Quantum...
MIT physicists have observed the Pauli exclusion principle suppressing how a cloud of ultracold, superdense atoms scatter light. The effect, known as Pauli blocking, makes the atoms effectively transparent and invisible to photons.
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.
Researchers at the University of Bonn used ultracold atoms to study magnetic orders in coupled thin films, finding that correlations competed with original order. The study provides new insights into novel quantum phenomena and their potential applications in quantum computing and superconductors.
Researchers discovered diverse behaviors in ultracold lithium atom spins influenced by magnetic forces. They used lasers to trap and arrange strings of 40 atoms each, inducing helical patterns that disappeared as individual spins approached equilibrium. The findings may help engineer spintronic devices and novel magnetic materials.
Researchers at Heidelberg University observed a phase transition with six atoms, showing signatures of a superfluid state. This finding reveals the emergence of collective behavior in microscopic systems.
Researchers use Poincaré sections to simplify chaotic behavior, revealing underlying symmetry and structure. This insight enables a deeper understanding of quantum chaos and potential links between classical and quantum physics.
Researchers from the University of Freiburg and their collaborators have developed a new method to simulate the formation of quantum crystals using dipolar atoms. This allows for unprecedented precision in measuring structures that have not been observed before, providing insights into the quantum properties underlying crystal formation.
Researchers at the University of Innsbruck propose a new measurement protocol to identify topological states in interacting systems. This method can extract topological invariants from statistical correlations of simple, local random measurements.
Researchers at MIT have successfully cooled sodium lithium molecules down to 200 billionths of a Kelvin using collisional cooling, enabling the potential for molecule-based quantum computing. The technique involved making the molecules and atoms spin in sync, avoiding 'bad' collisions that heated or destroyed the molecules.
Physicists from HKUST and PKU successfully simulated 3D topological matter using ultracold atoms, enabling investigation of nontrivial phases in all physical dimensions. The breakthrough opens possibilities for developing new topological materials that don't occur naturally.
Scientists create dynamic phases of matter by nudging quantum materials to jump between two states, allowing for new window into materials research. The discovery could lead to breakthroughs in quantum technologies and communication systems.
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.
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 used ultracold lithium atoms to verify a theory predicting collective behavior in one-dimensional wires. The study confirmed the predicted speed of charge waves and spin waves as a function of interaction strength, setting the stage for further investigation into strongly correlated electron physics.
Researchers have uncovered behavior in ultracold atoms that resembles the universe in microcosm, with potential implications for cosmology and the early universe's rapid expansion. The study reveals analogies to Hubble friction and provides new insights into energy conversion during inflation.
Researchers created a synthetic crystal for ultracold atoms and emulated key properties of a one-dimensional topological material. The team's findings open up new possibilities for studying non-equilibrium quantum dynamics in exotic systems.
Researchers at Princeton University discovered a unique magnetic behavior in ultracold atoms, which is consistent with the Fermi-Hubbard model. The team found that applying a strong magnetic field caused the atoms to line up in an alternating pattern and lean away from each other.
Researchers create reconfigurable array of traps for single atoms, enabling the manipulation of up to 50 individual atoms in separate traps deterministically. The technique uses lasers as optical tweezers to pick and hold individual atoms in place, paving the way for large-scale atom arrays in quantum computing.
Researchers from China and Peking University pioneered the proposal and realization of two-dimensional spin-orbit coupling for ultracold quantum gases. This achievement has significant influence on understanding exotic topological quantum states, implementing a major breakthrough in solid materials research.