Photon Blockades in an Optomechanical Cavity with a Bose-Einstein Condensate in the Strong Coupling Regime

被引:1
作者
Zhai, Cui-Lu [1 ]
Lu, Wangjun [1 ]
Jiao, Ya-Feng [2 ,3 ]
Kuang, Le-Man [2 ,4 ,5 ]
机构
[1] Hunan Inst Engn, Dept Maths & Phys, Xiangtan 411104, Peoples R China
[2] Zhengzhou Univ Light Ind, Synerget Innovat Acad Quantum Sci & Technol, Zhengzhou 450002, Peoples R China
[3] Zhengzhou Univ Light Ind, Sch Elect Informat, Zhengzhou 450001, Peoples R China
[4] Hunan Normal Univ, Synerget Innovat Ctr Quantum Effects & Applicat, Minist Educ, XJ Lab,Key Lab Low Dimens Quantum Struct & Quantum, Changsha 410081, Peoples R China
[5] Hunan Normal Univ, Dept Phys, Changsha 410081, Peoples R China
关键词
a Bose-Einstein Condensate; cavity quantum optomechanics; photon blockades; photon-induced tunneling; INTERACTING PHOTONS; SINGLE PHOTONS; QUANTUM; GENERATION;
D O I
10.1002/andp.202300465
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A proposal is made on how to manipulate photon blockades (PBs) and photon-induced tunneling (PIT) in an optomechanical cavity with a Bose-Einstein Condensate. It is shown that the single-photon blockade (1PB) can emerge with appropriate scattering strength between atoms. Further, by tuning interatomic scattering strength, the switch between 1PB and PIT at the fixed optical detuning can be realized in interatomic repulsion or attraction conditions. The enhancement of 1PB can also be achieved. The scattering control of PBs can be understood from the perspective of the anharmonicity of the energy levels modulated by the interatomic collision. Such a system can be equivalent to a conventional optomechanical system plus an interatomic scattering term. It is found that although there are no PBs in the conventional optomechanical system, in the BEC optomechanical system (BECOMS), PBs can occur at the fixed optical detuning. Moreover, the BECOMS can exhibit stronger 1PB under the same optomechanical coupling intensity. Due to the advantages of intrinsic strong optomechanical nonlinearity and the negligible thermal noise of the mechanical environment, BECOMS is promising for experimental realization of PBs. The results open new possibilities for manipulating few-photon states in quantum regime in cavity optomechanics with a Bose-Einstein Condensate. This paper studies the photon blockades in an optomechanical cavity with a Bose-Einstein Condensate. By tuning interatomic scattering strength, the switch between single-photon blockade and photon-induced tunneling and the enhancement of single-photon blockade can be realized in interatomic repulsion or attraction conditions. Moreover, the system can exhibit the stronger 1PB under the same optomechanical coupling than conventional optomechanical system. image
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页数:10
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