Lower limit on the achievable temperature in resonator-based sideband cooling

Details Lower limit on the achievable temperature in resonator-based sideband cooling Lower limit on the achievable temperature in resonator-based sideband cooling

2007-09-24

arxiv.org/abs/0709.3775v2

Phys. Rev. B 78, 035406 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

6 pages, 4 figures, uses psfrag

Scientific paper

10.1103/PhysRevB.78.035406

A resonator can be effectively used as a cooler for another linear oscillator with a much smaller frequency. A huge cooling effect, which could be used to cool a mechanical oscillator below the energy of quantum fluctuations, has been predicted by several authors. However, here we show that there is a lower limit T* on the achievable temperature that was not considered in previous works and can be higher than the quantum limit in realistic experimental realizations. We also point out that the decay rate of the resonator, which previous studies stress should be small, must be larger than the decay rate of the cooled oscillator for effective cooling.

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