Modified Bose-Einstein condensation in an optical quantum gas

Carl Ulrich Mattschas, Mario Vretenar, Chris Toebes, Jan Andre Klärs

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Abstract

Open quantum systems can be systematically controlled by making changes to their environment. A prerequisite for a deliberate control of an open quantum system is a sufficient understanding of its underlying physical mechanisms. Here, we investigate the Bose-Einstein condensation of a photonic Bose gas in an environment with controlled dissipation and feedback realized by a potential landscape that effectively acts as a Mach-Zehnder interferometer. Our measurements offer a highly systematic picture of Bose-Einstein condensation under non-equilibrium conditions. We show that the condensation process becomes an interplay between minimizing the energy of the condensate, minimizing the particle losses and maximizing the constructive feedback from the environment.

[1] M. Vretenar et al., arXiv:2105.10708 [cond-mat.quant-gas]
Original languageEnglish
Publication statusPublished - 14 Oct 2021
Event44th Annual Meeting NNV AMO Lunteren 2021 - De Werelt, Lunteren, Netherlands
Duration: 12 Oct 202113 Oct 2021
Conference number: 44
https://www.ru.nl/amolunteren/

Conference

Conference44th Annual Meeting NNV AMO Lunteren 2021
CountryNetherlands
CityLunteren
Period12/10/2113/10/21
Internet address

Keywords

  • photon Bose-Einstein condensates
  • Non-equilibrium

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  • Poster Award

    Mattschas, C. U. (Recipient), 13 Oct 2021

    Prize

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