Quantum optical spring

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Amit Rai and G. S. Agarwal
Department of Physics, Oklahoma State University, Stillwater, Oklahoma 74078, USA

Received 23 January 2008; published 22 July 2008

Westudy the dynamics of the quantum optical spring, i.e., aspring whose spring constant undergoes discrete jumps depending on thequantum state of another system. We show the existence ofrevivals and fractional revivals in the quantum dynamics reminiscent ofsimilar dynamical features in cavity QED. We recover in thesemiclassical limit the results for an oscillator whose frequency undergoesa sudden change. The quantum optical spring is conceivable, forexample, by a micromirror under the influence of radiation pressureby a field which is strictly quantum mechanical. Our worksuggests that driven systems would in general exhibit a verydifferent dynamics if the drive is replaced by a quantumsource.

URL:	http://link.aps.org/doi/10.1103/PhysRevA.78.013831
DOI:	10.1103/PhysRevA.78.013831
PACS:	42.50.Pq; 42.60.Da 42.50.Pq Cavity quantum electrodynamics; micromasers 42.60.Da Laser resonators, cavities, amplifiers, arrays, and rings YEAR: 2008
KEYWORDS:	micromirrors, quantum electrodynamics, quantum optics, radiation pressure

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