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Atom-driven multistability in an optomechanical cavity under broken PT-symmetry
Hou Ian1,2
2017-02
Source PublicationNew Journal of Physics
ISSN1367-2630
Volume19
Abstract

In a ring cavity filled with an atomic condensate, self-bunching of atoms due to the cavity pump mode produce an inversion that re-emits into the cavity probe mode with an exponential gain, forming atomic recoil lasing. An optomechanical ring cavity is formed when one of the reflective mirrors is mounted on a mechanical vibrating beam. In this paper, we extend studies on the stability of linear optomechanical cavities to such ring cavities with two counter-propagating cavity modes, especially when the forward propagating pump mode is taken to its weak coupling limit. We find that when the atomic recoil is in action, stable states of the mechanical mode of the mirror converge into branch cuts, where the gain produced by the recoiling strikes balance with the multiple decay sources, such as cavity leakage in the optomechanical system. This balance is obtained when the propagation delay in the dispersive atomic medium matches in a periodic pattern to the frequencies and linewidths of the cavity mode and the collective bosonic mode of the atoms. We show an input-output hysteresis cycle between the atomic mode and the cavity mode to verify the multi-valuation of the stable states after branching at the weak coupling limit.

KeywordOptomechanical Cavity Atomic Recoil Multistability
DOIhttp://doi.org/10.1088/1367-2630/aa5b7b
Indexed BySCI
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000395947400002
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Document TypeJournal article
CollectionFaculty of Science and Technology
INSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorHou Ian
Affiliation1.Institute of Applied Physics and Materials Engineering, FST, University of Macau, Macau
2.UMacau Research Institute, Zhuhai, Guangdong, Peopleʼs Republic of China
First Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Hou Ian. Atom-driven multistability in an optomechanical cavity under broken PT-symmetry[J]. New Journal of Physics,2017,19.
APA Hou Ian.(2017).Atom-driven multistability in an optomechanical cavity under broken PT-symmetry.New Journal of Physics,19.
MLA Hou Ian."Atom-driven multistability in an optomechanical cavity under broken PT-symmetry".New Journal of Physics 19(2017).
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