Dresden 2009 – wissenschaftliches Programm
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HL: Fachverband Halbleiterphysik
HL 32: Focused Session: Quantum optomechanics
HL 32.1: Topical Talk
Mittwoch, 25. März 2009, 14:00–14:30, HSZ 01
Cavity Optomechanics using Optical Microresonators — •Tobias Kippenberg1,2, Albert Schliesser2, Remi Riviere2, and Olivier Arcizet2 — 1Ecole Polytechnique Federale de Lausanne (EPFL) — 2Max Planck Institut fuer Quantentoptik (MPQ)
In this talk I will describe the advances the Max Planck Institute of Quantum Optics has made in the field of cavity optomechanics. Using on chip micro-cavities that combine both optical and mechanical degrees of freedom in one and the same device(2), we have been able to show that the radiation pressure back-action of photons can be used to passively cool3 the mechanical oscillator, akin to Doppler Cooling of Atoms. Furthermore, we have been able to demonstrate for the first time resolved sideband cooling(4) by using optical microresonators whose mechanical oscillator frequency exceeds the cavity decay rate. This technique is well known in Atomic Physics to provide ground state cooling. Moreover the ability to monitor the motion of the oscillator with a quantum limited sensitivity attometer will be discussed and a description of our quest to ever lower phonon occupancies using cryogenic exchange gas cooling to 1.6 K will be described, which has allowed to reach a final occupancy of only 68 +/- 20 phonons. (1) Kippenberg, T. J. & Vahala, K. J. Science 321, 1172 (2008). (2)Kippenberg, T. J., Rokhsari, H., Carmon, T., Scherer, A. & Vahala, K. J. Physical Review Letters 95, 033901 (2005). (3) Schliesser, A., Del'Haye, P., Nooshi, N., Vahala, K. J. & Kippenberg, T. J. Physical Review Letters 97, 243905 (2006). (4) Schliesser, A., Riviere, R., Anetsberger, G., Arcizet, O. & Kippenberg, T. J. Nature Physics 2008 (2008).