Time-periodic driving of a bath-coupled open quantum gas of light

• URL: http://arxiv.org/abs/2502.14986v1
• Date: Thu, 20 Feb 2025 19:22:11 GMT
• Title: Time-periodic driving of a bath-coupled open quantum gas of light
• Authors: Andris Erglis, Alexander Sazhin, Frank Vewinger, Martin Weitz, Stefan Yoshi Buhmann, Julian Schmitt,
• Abstract summary: We study the frequency-resolved density response of a photon Bose-Einstein condensate coupled to a bath of dye molecules by time-periodic driving.<n>We find that as the photon number increases, the response of the coupled condensate-bath system transitions from overdamped to resonant behavior.
• Score: 37.69303106863453
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: We study the frequency-resolved density response of a photon Bose-Einstein condensate coupled to a bath of dye molecules by time-periodic driving. By monitoring the photon number dynamics for different drive frequencies, we obtain the spectral response of the condensate in a phase-sensitive way. We find that as the photon number increases, the response of the coupled condensate-bath system transitions from overdamped to resonant behavior, indicating a transition from closed to open system dynamics. Our spectroscopy method paves the way for studies of collective excitations in complex driven-dissipative systems.

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