https://doi.org/10.1140/epjd/s10053-024-00936-1
Regular Article - Quantum Optics
Improved photon blockade in the two-photon Jaynes–Cummings model by additional quantum interference
1 School of Physics and Technology, University of Jinan, 336 Nanxinzhuang West Road, 250022, Jinan, China
2 Marketing Service Center (Center of Metrology), State Grid ShanDong Electric Power Company, 150 Jinger Road, 250001, Jinan, China
Received:
17
July
2024
Accepted:
15
November
2024
Published online: 11 December 2024
In a two-photon Jaynes–Cummings model which consists of an atom interacting with a cavity mode with a two-photon interaction, we find the photon blockade effect can be largely improved by inducing a interference pathway. The interference pathway can be either a two-photon transition or an atom transition. The purity of the single photon can be improved by 
times, and we find the high purity of single photon is induced by combination of conventional and unconventional photon blockade. The method provides a way to improve the purity of single photon.
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© The Author(s), under exclusive licence to EDP Sciences, SIF and Springer-Verlag GmbH Germany, part of Springer Nature 2024
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
