Issue |
EPJ Web Conf.
Volume 266, 2022
EOS Annual Meeting (EOSAM 2022)
|
|
---|---|---|
Article Number | 08005 | |
Number of page(s) | 2 | |
Section | Topical Meeting (TOM) 8- Non-linear and Quantum Optics | |
DOI | https://doi.org/10.1051/epjconf/202226608005 | |
Published online | 13 October 2022 |
https://doi.org/10.1051/epjconf/202226608005
Quantum vacuum excitation of a quasi-normal mode in an analog model of black hole spacetime
Laboratoire Kastler Brossel, Sorbonne Université, CNRS, ENS-Université PSL, Collège de France, Paris 75005, France
* e-mail: maxime.jacquet@lkb.upmc.fr
Published online: 13 October 2022
Vacuum quantum fluctuations near horizons are known to yield correlated emission by the Hawking effect. In this talk, I will explain how a 1 dimensional flow of microcavity polaritons may be engineered to produce an effective curved spacetime with a black hole horizon. I will present numerical computations of correlated emission on this spacetime and show that, in addition to the Hawking effect at the sonic horizon, quantum fluctuations may result in a sizeable stationary excitation of a quasi-normal mode of the field theory. Observable signatures of the excitation of the quasi-normal mode are found in the spatial density fluctuations as well as in the spectrum of Hawking emission. I will explain how the driven-dissipative dynamics of the polariton fluid are key to observing the quantum excitation of the quasi-normal mode. Nonetheless, this observation suggests a general and intrinsic fluctuation-driven mechanism leading to the quantum excitation of quasi-normal modes on black hole spacetimes.
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