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

M. Grajcar, Sahel Ashhab, J. R. Johansson, Franco Nori

Research output: Contribution to journalArticle

41 Citations (Scopus)

Abstract

A resonator with eigenfrequency ωr can be effectively used as a cooler for another linear oscillator with a much smaller frequency ωm ωr. 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, given by T = Tm ωm / ωr, that was not considered in previous work 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.

Original languageEnglish
Article number035406
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume78
Issue number3
DOIs
Publication statusPublished - 3 Jul 2008
Externally publishedYes

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sidebands
decay rates
Resonators
Oscillators (mechanical)
resonators
oscillators
Cooling
mechanical oscillators
cooling
coolers
Temperature
temperature
energy

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Lower limit on the achievable temperature in resonator-based sideband cooling. / Grajcar, M.; Ashhab, Sahel; Johansson, J. R.; Nori, Franco.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 78, No. 3, 035406, 03.07.2008.

Research output: Contribution to journalArticle

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