Phase Sensitivity of Atomic Josephson Junctions with a Bosonic Species Confined by a Double-Well Potential

Zhu, Haoxiang; Huang, Guoqiang; Luo, Chih-Wei

doi:10.1007/s10773-015-2708-x

Cited by 3 publications

(1 citation statement)

References 16 publications

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“…We show for the first time that both maximum SS and quantum entanglement exists in the superradiant phase near the critical point. Spin squeezing dynamics and chaos of the Dicke model has been studied earlier [30] while a recent study explored the influence of Rabi oscillation energy on quantum Fisher information and phase sensitivity of BEC in a double-well potential [31]. Exact numerical analysis of spin squeezing in different atomic systems has been performed earlier [32][33][34][35].…”

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confidence: 99%

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

Bhattacherjee¹,

Sharma²

2016

Preprint

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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.

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confidence: 99%

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

Bhattacherjee¹,

Sharma²

2016

Preprint

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Entanglement and Phase-Sensitivity of a Mach-Zehnder Interferometer for the Coherent Spin State Input

2016

Int J Theor Phys

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Enhanced spin squeezing and quantum entanglement near the critical point of the Jaynes–Cummings–Dicke model

Bhattacherjee

Sharma

2017

Int. J. Mod. Phys. B

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We investigate spin squeezing (SS) and the quantum Fisher information (QFI) for the Jaynes–Cummings–Dicke (JCD) 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 occur and thus the critical point emerges as a useful resource for precision measurements. In the presence of decoherence and particle loss, we show that gradually with time, even though the ability of squeezing and entanglement generation are weakened, yet significant amounts are still present which can be relevant to quantum information processing and precision spectroscopy.

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Phase Sensitivity of Atomic Josephson Junctions with a Bosonic Species Confined by a Double-Well Potential

Cited by 3 publications

References 16 publications

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

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

Entanglement and Phase-Sensitivity of a Mach-Zehnder Interferometer for the Coherent Spin State Input

Enhanced spin squeezing and quantum entanglement near the critical point of the Jaynes–Cummings–Dicke model

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