Squeezing of Atomic Quantum Projection Noise

Details Squeezing of Atomic Quantum Projection Noise Squeezing of Atomic Quantum Projection Noise

2009-06-14

arxiv.org/abs/0906.2572v1

J. Mod. Opt. 56, 1993 (2009)

Physics

Quantum Physics

Submitted to Journal of Modern Optics

Scientific paper

10.1080/09500340903033682

We provide a framework for understanding recent experiments on squeezing of a collective atomic pseudo-spin, induced by a homodyne measurement on off-resonant probe light interrogating the atoms. The detection of light decimates the atomic state distribution and we discuss the conditions under which the resulting reduced quantum fluctuations are metrologically relevant. In particular, we consider a dual probe scheme which benefits from a cancelation of classical common mode noise sources such that quantum fluctuations from light and atoms are the main contributions to the detected signal.

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