Bragg spectroscopy of strongly interacting Fermi gases
| Autor: | Paul Dyke, Marcus Lingham, Sascha Hoinka, Chris J. Vale, Peter Hannaford, T. Peppler, Kristian Fenech |
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| Rok vydání: | 2016 |
| Předmět: |
Condensed Matter::Quantum Gases
Physics 010308 nuclear & particles physics Condensation Bragg's law 01 natural sciences Measure (mathematics) Atomic and Molecular Physics and Optics Momentum 0103 physical sciences Laser detuning Atomic physics 010306 general physics Spectroscopy Fermi Gamma-ray Space Telescope Spin-½ |
| Zdroj: | Journal of Modern Optics. 63:1783-1794 |
| ISSN: | 1362-3044 0950-0340 |
| Popis: | This article provides an overview of recent developments and emerging topics in the study of two-component Fermi gases using Bragg spectroscopy. Bragg scattering is achieved by exposing a gas to two intersecting laser beams with a slight frequency difference and measuring the momentum transferred to the atoms. By varying the Bragg laser detuning, it is possible to measure either the density or spin response functions which characterize the basic excitations present in the gas. Specifically, one can measure properties such as the dynamic and static structure factors, Tan’s universal contact parameter and observe signatures for the onset of pair condensation locally within a gas. |
| Databáze: | OpenAIRE |
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