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Paper detail

Spin squeezing and Quantum Fisher Information in the Jaynes-Cummings Dicke Model

We investigate spin squeezing (SS) and the quantum Fisher information (QFI) for the Jaynes-Cummings Dicke (JC-Dicke) model in a two component atomic Bose-Einstein condensate (BEC) inside an optical cavity. Analytical expressions for spin squeezing and the reciprocal of the quantum Fisher information per particle (RMQFI) are derived using the frozen spin approximation. It is shown that in the superradiant phase near the critical point, maximum squeezing and maximum quantum entanglement occurs. The present study is relevant to quantum information processing and precision spectroscopy.

preprint2016arXivOpen access
Aranya B BhattacherjeeDeepti Sharma
cond-mat.quant-gasquant-ph
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Aranya B BhattacherjeeDeepti Sharma

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