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キーワード:
Quantum Physics, quant-ph, Condensed Matter, Mesoscale and Nanoscale Physics, cond-mat.mes-hall, Condensed Matter, Quantum Gases, cond-mat.quant-gas, Physics, Atomic Physics, physics.atom-ph, Physics, Optics, physics.optics
要旨:
We discuss a hybrid quantum system where a dielectric membrane situated
inside an optical cavity is coupled to a distant atomic ensemble trapped in an
optical lattice. The coupling is mediated by the exchange of sideband photons
of the lattice laser, and is enhanced by the cavity finesse as well as the
square root of the number of atoms. In addition to observing coherent dynamics
between the two systems, one can also switch on a tailored dissipation by laser
cooling the atoms, thereby allowing for sympathetic cooling of the membrane.
The resulting cooling scheme does not require resolved sideband conditions for
the cavity, which relaxes a constraint present in standard optomechanical
cavity cooling. We present a quantum mechanical treatment of this modular open
system which takes into account the dominant imperfections, and identify
optimal operation points for both coherent dynamics and sympathetic cooling. In
particular, we find that ground state cooling of a cryogenically pre-cooled
membrane is possible for realistic parameters.
