Analyzing quantum jumps of one and two atoms strongly coupled to an optical cavity

Details Analyzing quantum jumps of one and two atoms strongly coupled to an optical cavity Analyzing quantum jumps of one and two atoms strongly coupled to an optical cavity

2010-02-06

arxiv.org/abs/1002.1366v1

J. Opt. Soc. Am. B 27, A 152 (2010)

Physics

Quantum Physics

12 pages, 13 figures

Scientific paper

We induce quantum jumps between the hyperfine ground states of one and two Cesium atoms, strongly coupled to the mode of a high-finesse optical resonator, and analyze the resulting random telegraph signals. We identify experimental parameters to deduce the atomic spin state nondestructively from the stream of photons transmitted through the cavity, achieving a compromise between a good signal-to-noise ratio and minimal measurement-induced perturbations. In order to extract optimum information about the spin dynamics from the photon count signal, a Bayesian update formalism is employed, which yields time-dependent probabilities for the atoms to be in either hyperfine state. We discuss the effect of super-Poissonian photon number distributions caused by atomic motion.

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