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Phase-noise measurement in a cavity with a movable mirror undergoing quantum Brownian motion

2001; American Physical Society; Volume: 63; Issue: 2 Linguagem: Inglês

10.1103/physreva.63.023812

1538-4446

Vittorio Giovannetti, David Vitali,

Quantum optics and atomic interactions

We study the dynamics of an optical mode in a cavity with a movable mirror subject to quantum Brownian motion. We study the phase noise power spectrum of the output light, and we describe the mirror Brownian motion, which is responsible for the thermal noise contribution, using the quantum Langevin approach. We show that the standard quantum Langevin equations, supplemented with the appropriate non-Markovian correlation functions, provide an adequate description of Brownian motion.