We explore the emergence and active control of optical bistability in a two-level atom near a graphene sheet. Our theory incorporates self-interaction of the optically driven atom and its coupling to electromagnetic vacuum modes, both of which are sensitive to the electrically tunable interband transition threshold in graphene. We show that electro-optical bistability and hysteresis can manifest in the intensity, spectrum, and quantum statistics of the light emitted by the atom, which undergoes critical slow-down to steady state. The optically driven atom-graphene interaction constitutes a platform for active control of driven atomic systems in coherent quantum control and atomic physics.
|Tidsskrift||Physical Review Letters|
|Status||Udgivet - 16. dec. 2022|
Bibliografisk noteFunding Information:
The authors thank Fabio Raspanti, P. A. D. Gonçalves, Sebastian Hofferberth, N. Asger Mortensen, and Klaus Mølmer for insightful and enjoyable discussions. J. D. C. is a Sapere Aude research leader supported by VILLUM FONDEN (Grant No. 16498) and Independent Research Fund Denmark (Grant No. 0165-00051B).
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