Controllable band loops of ultracold atoms in a cavity

Zheng, Qing‐Rong; Li, S. C.; Fu, Libin

doi:10.1140/epjd/e2012-30288-8

Cited by 4 publications

(5 citation statements)

References 31 publications

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“…The noise with a larger D makes the energy dissipating faster. But there are some differences in the dissipative process between the present study and the results obtained within phenomenological theories [19,20]. The main difference lies in the evolutions from MQST states.…”

Section: Resultscontrasting

confidence: 83%

“…The phase-space diagram of double-well BECs without noise has been studied based on the time-dependent GP equation [20] and the obtained results are consistent quantitatively with the two-mode model results [3]. Three typical dynamical regimes can be present.…”

Section: Resultsmentioning

confidence: 66%

“…The dissipative effect has been studied by several groups [18][19][20][21][22][23]. It is suggested that the MQST state * Email: qgu@ustb.edu.cn can be destroyed by energy dissipation [18][19][20]. Possible decoherence caused by dissipation is also discussed [21,22].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Dynamics of double-well Bose–Einstein condensates subject to external Gaussian white noise

Zheng¹,

Hao²,

2013

J. Phys. B: At. Mol. Opt. Phys.

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Dynamical properties of the Bose-Einstein condensate in double-well potential subject to Gaussian white noise are investigated by numerically solving the time-dependent Gross-Pitaevskii equation. The Gaussian white noise is used to describe influence of the random environmental disturbance on the double-well condensate. Dynamical evolutions from three different initial states, the Josephson oscillation state, the running phase and π-mode macroscopic quantum self-trapping states are considered. It is shown that the system is rather robust with respect to the weak noise whose strength is small and change rate is high. If the evolution time is sufficiently long, the weak noise will finally drive the system to evolve from high energy states to low energy states, but in a manner rather different from the energy-dissipation effect. In presence of strong noise with either large strength or slow change rate, the double-well condensate may exhibit very irregular dynamical behaviors.

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Section: Resultscontrasting

confidence: 83%

Section: Resultsmentioning

confidence: 66%

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Dynamics of double-well Bose–Einstein condensates subject to external Gaussian white noise

Zheng¹,

Hao²,

2013

J. Phys. B: At. Mol. Opt. Phys.

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“…[23] Kerr interaction would manipulate the energy band loops of ultracold atoms in the cavity. [24] In this paper, we consider a standard optomechanical system and the cavity additionally fills with the Kerr medium, which gives rise to a strong nonlinear interaction between photons. Specifically, we investigate the effect of Kerr interaction on the stationary optomechanical entanglement.…”

Section: Introductionmentioning

confidence: 99%

Enhancing stationary optomechanical entanglement with the Kerr medium

Zhang¹,

Zhang²,

Zheng³

2013

Chinese Phys. B

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We theoretically investigate the stationary entanglement of a optomechanical system with an additional Kerr medium in the cavity. There are two kinds of interactions in the system, photon-mirror interaction and photon-photon interaction. The optomechanical entanglement created by the former interaction can be effectively controlled by the latter one. We find that the optomechanical entanglement is suppressed by Kerr interaction due to photon blockage. We also find that the Kerr interaction can create the stationary entanglement and induce the resonance of entanglement in the small detuning regime. These results show that the Kerr interaction is an effective control for the optomechanical system.

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“…[24] Kerr interaction would manipulate the energy band loops of ultracold atoms in the cavity. [25] Moreover, the optomechanical system is usually driven by the laser. With the current technology, the phase noise of laser cannot always be omitted compared to the amplitude noise.…”

mentioning

confidence: 99%

Effect of Phase Noise on the Stationary Entanglement of an Optomechanical System with Kerr Medium

Zhang

Zheng

2013

Chinese Phys. Lett.

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We theoretically investigate the effect of phase noise on the stationary entanglement of an optomechanical system, which has the additional Kerr medium in the cavity. There are two kinds of interactions in the system, photon-mirror interaction and photon-photon interaction. We find that the optomechanical entanglement can be suppressed by the phase noise of the pumping laser and Kerr interaction of photons. We also find that Kerr interaction can make the phase-noise-induced double peak of the stationary entanglement change to a single peak.

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Controllable band loops of ultracold atoms in a cavity

Cited by 4 publications

References 31 publications

Dynamics of double-well Bose–Einstein condensates subject to external Gaussian white noise

Dynamics of double-well Bose–Einstein condensates subject to external Gaussian white noise

Enhancing stationary optomechanical entanglement with the Kerr medium

Effect of Phase Noise on the Stationary Entanglement of an Optomechanical System with Kerr Medium

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