Optomechanics of a quantum-degenerate fermi gas

R. Kanamoto, P. Meystre

Research output: Contribution to journalArticlepeer-review

83 Scopus citations


We explore theoretically the optomechanical interaction between a light field and a mechanical mode of ultracold fermionic atoms inside a Fabry-Pérot cavity. The low-lying phonon mode of the fermionic ensemble is a collective density oscillation associated with particle-hole excitations, and is mathematically analogous to the momentum side-mode excitations of a bosonic condensate. The mechanical motion of the fermionic particle-hole system behaves hence as a "moving mirror." We derive an effective system Hamiltonian that has the form of generic optomechanical systems. We also discuss the experimental consequences the optomechanical coupling in optical bistability and in the noise spectrum of the system.

Original languageEnglish (US)
Article number063601
JournalPhysical review letters
Issue number6
StatePublished - Feb 9 2010

ASJC Scopus subject areas

  • General Physics and Astronomy


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