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| degenerate quantum gas | |
|---|---|
| Name | Degenerate quantum gas |
| Field | Quantum physics, Atomic physics, Condensed matter physics |
| Discovered | 20th century |
| Notable | Satyendra Nath Bose, Albert Einstein, Enrico Fermi, Paul Dirac, Wolfgang Pauli, Lev Landau, Richard Feynman |
degenerate quantum gas
A degenerate quantum gas is a low-temperature assembly of indistinguishable particles whose behavior is governed by quantum statistics, leading to macroscopic occupation of quantum states and collective quantum phenomena. Research on this topic draws on experimental platforms and theoretical frameworks developed across institutions such as the University of Cambridge, Massachusetts Institute of Technology, Stanford University, Harvard University, and laboratories like CERN and Los Alamos National Laboratory. Historical milestones involve figures and events tied to Satyendra Nath Bose, Albert Einstein, Enrico Fermi, Paul Dirac, Wolfgang Pauli, and experiments inspired by the Laser cooling era and the Nobel Prize in Physics awarded for related work.
A degenerate quantum gas emerges when thermal energy falls below characteristic quantum scales, a concept formalized during the early 20th century debates involving Satyendra Nath Bose, Albert Einstein, Enrico Fermi, and Paul Dirac. Experimental verification leveraged techniques from the development of the laser and advances at institutions such as Bell Labs, National Institute of Standards and Technology, Joint Quantum Institute, and Max Planck Society. The field interfaces with research programs at Bell Labs Research, IBM Research, Microsoft Research, Lawrence Berkeley National Laboratory, Argonne National Laboratory and collaborations like EU Quantum Flagship. Landmark experiments reference infrastructure including the Large Hadron Collider for related cryogenic techniques and observatories like the Hubble Space Telescope for astrophysical analogues.
Quantum degeneracy is quantified using statistics introduced by Enrico Fermi and Paul Dirac (Fermi–Dirac) and by Satyendra Nath Bose and Albert Einstein (Bose–Einstein). Criteria involve the thermal de Broglie wavelength compared to interparticle spacing, concepts refined in courses and programs at California Institute of Technology, Princeton University, University of Oxford, University of Tokyo, and formalized in textbooks influenced by authors affiliated with Cambridge University Press and Oxford University Press. The role of exclusion principles and occupation numbers draws on insights from Wolfgang Pauli, Lev Landau, John Bardeen, Leon Cooper, and Robert Schrieffer in collective state descriptions.
Degenerate Fermi gases realize Fermi surfaces and shell structure relevant to studies performed at National Institute of Standards and Technology, Rice University, University of Chicago, and Columbia University. Bose–Einstein condensates reflect macroscopic coherence studied in groups at MIT, JILA, University of Colorado Boulder, Georgia Institute of Technology, and international centers such as École Normale Supérieure and University of Innsbruck. Experimental and theoretical cross-links include researchers from Bell Labs, Los Alamos National Laboratory, Riken, École Polytechnique, and awardees of the Nobel Prize in Physics.
Realization depends on laser cooling, evaporative cooling, sympathetic cooling, and magnetic or optical trapping developed at Stanford University, MIT, Harvard University, Max Planck Institute for Quantum Optics, and National Institute of Standards and Technology. Techniques trace to inventions and programs at Bell Labs, Sandia National Laboratories, Lawrence Livermore National Laboratory, Los Alamos National Laboratory, and standards maintained by National Physical Laboratory. Laser and trapping advances connect to technologies originating in companies and labs like IBM Research, Honeywell, and Lockheed Martin spin-off programs.
Properties include superfluidity, quantized vortices, collective excitations, and coherence measured in experiments at JILA, MIT, University of Cambridge, École Normale Supérieure, Max Planck Society, University of Tokyo, and Imperial College London. Observed phenomena relate to work by theorists and experimenters affiliated with Landau Institute for Theoretical Physics, Institute for Advanced Study, Perimeter Institute, and collaborations across CERN and national labs. Analogies span nuclear systems studied at Oak Ridge National Laboratory and astrophysical contexts investigated by teams using European Southern Observatory facilities.
Theoretical descriptions employ mean-field theories, Bogoliubov transformations, Bethe ansatz, renormalization group, quantum Monte Carlo, density functional theory, and diagrammatic techniques elaborated in research groups at Princeton University, Harvard University, Stanford University, University of California, Berkeley, University of Cambridge, California Institute of Technology and mathematical contributions linked to institutes like Clay Mathematics Institute. Foundational names associated with methods include Richard Feynman, Lev Landau, John Bardeen, Philip W. Anderson, David Mermin, and recipients of prizes such as the Wolf Prize.
Applications span precision metrology, atom interferometry, quantum simulation, quantum information processors, and sensors developed in collaborations involving National Institute of Standards and Technology, MIT Lincoln Laboratory, Google, Microsoft, IBM, Honeywell, Bosch, and startups spun out from Stanford University and Harvard University. Implications influence research programs at European Commission initiatives like Horizon 2020 and industrial partnerships with DARPA, NASA, ESA, and infrastructure projects involving European Southern Observatory and national labs. The technological landscape connects to commercial devices produced by firms such as ColdQuanta, QuEra Computing, and research consortia including Quantum Economic Development Consortium.
Category:Quantum gases