Simultaneously enhanced photon blockades in two microwave cavities via driving a giant atom

We propose a scheme to enhance photon blockades simultaneously in two microwave cavities connected by a giant atom. In the case that only one cavity is weakly driven, we observe that the enhanced photon blockades occur in both cavities at the same time, which is attributed to the anharmonic eigenene...

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Bibliographic Details
Published in:New journal of physics 2023-04, Vol.25 (4), p.43030
Main Authors: Zheng, Chang-Mei, Zhang, Wei, Wang, Dong-Yang, Han, Xue, Wang, Hong-Fu
Format: Article
Language:English
Subjects:
Anharmonicity
Atoms & subatomic particles
giant atom
Holes
microwave cavities
photon blockade
Photons
Physics
Quantum dots
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Summary:We propose a scheme to enhance photon blockades simultaneously in two microwave cavities connected by a giant atom. In the case that only one cavity is weakly driven, we observe that the enhanced photon blockades occur in both cavities at the same time, which is attributed to the anharmonic eigenenergy spectrum constructed by the resonantly coupled giant atom. When the cavity and the atom are simultaneously driven, the stronger photon blockades in two cavities can be successfully achieved by the destructive quantum interference of two-photon excitation. Interestingly, we find that high single-photon occupations can be obtained in both cases. Moreover, we give the optimal conditions for conventional and unconventional photon blockades through analytical calculations, which are in good agreement with numerical results. Our scheme opens a prospective path to achieve simultaneous photon blockades in two indirectly coupled cavities, and provides a promising method to generate the high-quality and brightness single photon source.
ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/accd8c