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Condensed Matter > Mesoscale and Nanoscale Physics

arXiv:2501.07074 (cond-mat)
[Submitted on 13 Jan 2025]

Title:Couplings between Photons and Ensemble of Emitters in a High-$Q$ Cavity at Mesoscopic Excitation Levels

Authors:Chenjiang Qian, Viviana Villafañe, Pedro Soubelet, Andreas V. Stier, Jonathan J. Finley
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Abstract:We investigate the coupling between an ensemble of individual emitters and multiple photons in a high-$Q$ cavity at the mesoscopic excitation level. The master equation theory is used to calculate the emission spectrum of the cavity QED system. The increasing excitation level not only pumps the system to the high-energy multi-emitter-photon states, but also introduces the pump-induced dephasing that suppresses the coherent energy exchange (coupling) between photons and emitters. When the emitter lifetime exceeds a threshold, we observe the mesoscopic excitation level i.e., the system is pumped to high energy states whilst the coherent couplings between these states are not yet suppressed. The mesoscopic excitation enables the couplings between multi-emitter-photon states, and thereby, paves the way to building quantum photonic devices based on multiple photons and nonlinear effects.
Subjects: Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
Cite as: arXiv:2501.07074 [cond-mat.mes-hall]
  (or arXiv:2501.07074v1 [cond-mat.mes-hall] for this version)
  https://doi.org/10.48550/arXiv.2501.07074

Submission history

From: Chenjiang Qian Prof. [view email]
[v1] Mon, 13 Jan 2025 06:06:51 UTC (2,007 KB)
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