Journal
EUROPEAN PHYSICAL JOURNAL D
Volume 55, Issue 3, Pages 659-668Publisher
SPRINGER
DOI: 10.1140/epjd/e2009-00265-7
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Funding
- National Scientific Fund of Hungary [NF68736, T046129]
- Austrian-Hungarian bilateral cooperation programme [AT3/2007]
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We derive a quantum master equation for a single mode excitation of a Bose-Einstein condensate by a high-finesse optical cavity. This system is formally analogous to a broad class of opto-mechanical systems comprising vibrating mirrors and resonator modes coupled by radiation pressure. The presented equation accounts for the dissipative part of the dynamics due to the coupling of a driven, lossy optical mode of a resonator. This allows for exploring the quantum limit of opto-mechanical systems in the presence of dissipation in a classically bistable regime. We find that the measurement-induced back-action noise impedes the observation of quantum tunneling and leads to a non-exponential dephasing of coherent matter wave oscillations.
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