Entanglement of three-level atomic system and spontaneous emission fields in a vacuum and near the 1D photonic crystal band gap

Shiri, Jalil; Khalilzadeh, Javad; Asadpour, Seyyed Hossein

doi:10.1007/s11801-022-2091-9

Optoelectron. Lett.

2022

DOI: 10.1007/s11801-022-2091-9

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Entanglement of three-level atomic system and spontaneous emission fields in a vacuum and near the 1D photonic crystal band gap

Jalil Shiri

Javad Khalilzadeh

Seyyed Hossein Asadpour

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2024

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Nonreciprocal mechanical entanglement in a spinning optomechanical system

Chen 陈,

Zhang 张,

Li 李

et al. 2024

Chinese Phys. B

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Quantum entanglement between distant massive mechanical oscillators is an important resource in the sensitive measurements and the quantum information processing. In this paper, we achieve the nonreciprocal mechanical entanglement in a compound optomechanical device consisting of two mechanical oscillators and a spinning whispering-gallery mode (WGM) optical microresonator. We show that obvious nonreciprocal mechanical entanglement emerges in this system in the presence of the Sagnac effect which is induced by the rotation of the WGM resonator, and the nonreciprocal region can be controlled by tuning the angular velocity of the rotation. The nonreciprocity originates from the breaking of the time-reversal symmetry of this multimode system due to the presence of the Sagnac effect. The optomechanical coupling and the mechanical interaction provide cooling channels for the first and second mechanical oscillators, respectively, two mechanical oscillators can be cooled simultaneously. The simultaneous cooling and the mechanical coupling of two mechanical oscillators ensure the generation of mechanical entanglement. Furthermore, an optimal mechanical entanglement can be achieved when the moderate optical frequency detuning and the driving power are chosen. The thermal noise of the mechanical environment has a negative effect on mechanical entanglement. Our scheme provides promising opportunities for the study of quantum information processing based on phonons and the sensitive measurements.

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Nonreciprocal mechanical entanglement in a spinning optomechanical system

Chen 陈,

Zhang 张,

Li 李

et al. 2024

Chinese Phys. B

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show abstract

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Entanglement of three-level atomic system and spontaneous emission fields in a vacuum and near the 1D photonic crystal band gap

Cited by 1 publication

References 16 publications

Nonreciprocal mechanical entanglement in a spinning optomechanical system

Nonreciprocal mechanical entanglement in a spinning optomechanical system

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