Enhancement of the group delay in quadratic coupling optomechanical systems subjected to an external force

doi:10.1088/1674-1056/accc80

中国物理B ›› 2023, Vol. 32 ›› Issue (12): 124202-124202.doi: 10.1088/1674-1056/accc80

Enhancement of the group delay in quadratic coupling optomechanical systems subjected to an external force

Jimmi Hervé Talla Mbé^1,†, Ulrich Chancelin Tiofack Demanou^1,2, Christian Kenfack-Sadem¹, and Martin Tchoffo¹

1 Research Unit of Condensed Matter, Electronics and Signal Processing, Department of Physics, University of Dschang, P.O. Box 67, Dschang, Cameroon;
2 African Institute for Mathematical Sciences, P.O. Box 608, Limbe, Cameroon

收稿日期:2023-01-16 修回日期:2023-03-29 接受日期:2023-04-13 出版日期:2023-11-14 发布日期:2023-11-22
通讯作者: Jimmi Hervé Talla Mbé E-mail:jhtallam@yahoo.fr

Enhancement of the group delay in quadratic coupling optomechanical systems subjected to an external force

Jimmi Hervé Talla Mbé^1,†, Ulrich Chancelin Tiofack Demanou^1,2, Christian Kenfack-Sadem¹, and Martin Tchoffo¹

1 Research Unit of Condensed Matter, Electronics and Signal Processing, Department of Physics, University of Dschang, P.O. Box 67, Dschang, Cameroon;
2 African Institute for Mathematical Sciences, P.O. Box 608, Limbe, Cameroon

Received:2023-01-16 Revised:2023-03-29 Accepted:2023-04-13 Online:2023-11-14 Published:2023-11-22
Contact: Jimmi Hervé Talla Mbé E-mail:jhtallam@yahoo.fr

摘要/Abstract

摘要： We theoretically study the effect of the quadratic coupling strength on optomechanical systems subjected to a continuous external force. Quadratic coupling strength originates from strong coupling between the optical and the mechanical degrees of freedom. We show that the quadratic coupling strength reduces the amplitude of the dispersion spectra at the resonance in both {blue- and red-sideband regimes}. However, it increases (decreases) the amplitude of the absorption spectrum in the blue- (red-)sideband regime. Furthermore, in both sideband regimes, the effective detuning between the pump and the cavity deviates with the quadratic coupling strength. Thereby, appropriate selection of the quadratic coupling strength results in an important magnification (in absolute value) of the group delay for both slow and fast light exiting from the optomechanical cavity.

关键词: slow and fast light, optomechanical systems, group delay, quadratic coupling

Abstract: We theoretically study the effect of the quadratic coupling strength on optomechanical systems subjected to a continuous external force. Quadratic coupling strength originates from strong coupling between the optical and the mechanical degrees of freedom. We show that the quadratic coupling strength reduces the amplitude of the dispersion spectra at the resonance in both {blue- and red-sideband regimes}. However, it increases (decreases) the amplitude of the absorption spectrum in the blue- (red-)sideband regime. Furthermore, in both sideband regimes, the effective detuning between the pump and the cavity deviates with the quadratic coupling strength. Thereby, appropriate selection of the quadratic coupling strength results in an important magnification (in absolute value) of the group delay for both slow and fast light exiting from the optomechanical cavity.

Key words: slow and fast light, optomechanical systems, group delay, quadratic coupling

中图分类号: (Quantum optics)

42.50.-p

42.25.Bs (Wave propagation, transmission and absorption) 42.79.-e (Optical elements, devices, and systems) 03.65.Yz (Decoherence; open systems; quantum statistical methods)

Jimmi Hervé Talla Mbé, Ulrich Chancelin Tiofack Demanou, Christian Kenfack-Sadem, and Martin Tchoffo. Enhancement of the group delay in quadratic coupling optomechanical systems subjected to an external force[J]. 中国物理B, 2023, 32(12): 124202-124202.

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Enhancement of the group delay in quadratic coupling optomechanical systems subjected to an external force

Enhancement of the group delay in quadratic coupling optomechanical systems subjected to an external force

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