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Title: Superradiance of particle-hole pairs in a Fermi Gas

ORAL

Abstract

Oral: Correlated emission is typically considered when two-level atoms emit single particle excitations into a bosonic environment. In this talk we present correlated emission of energy into a fermionic environment, in which excitations are carried by particle-hole pairs. In bosonic environments, the wavelength of the emitted boson, sets the maximum spacing at which correlated emission occurs. In contrast, two scales emarge for fermionic environements, one set by the emitted energy and fermion dispersion, while the other is set by the Fermi wavelength. Superradiance can occur for atom spacing smaller then the first scale, but only if the atoms are prepared in a collective coherent states. In contrast, atoms spaced shorter then the Fermi wavelength show collective decay similar to atoms coupled to a bosonic environment. As a concreate example we consider the collectie decay of a collection of nitrogen vacancy centers due to the stray magnetic fields produced by current flucations in a near by conductor. We conclude with prospects on disipative entanglement production via fermionic environemtns.

Presenters

  • Shane Kelly

    UCLA, University of California, Los Angeles

Authors

  • Shane Kelly

    UCLA, University of California, Los Angeles

  • Eric Kleinherbers

    UCLA, University of California, Los Angeles, University of Duisburg-Essen

  • Yaroslav Tserkovnyak

    UCLA, University of California, Los Angeles