Superradiant scattering in fluids of light

Angus Prain, Calum Maitland, Daniele Faccio, Francesco Marino

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)

Abstract

We investigate the scattering process of Bogoliubov excitations on a rotating photon fluid. Using the language of Noether currents we demonstrate the occurrence of a resonant amplification phenomenon, which reduces to the standard superradiance in the hydrodynamic limit. We make use of a time-domain formulation where superradiance emerges as a transient effect encoded in the amplitudes and phases of propagating localized wave packets. Our findings generalize previous studies in quantum fluids to the case of a non-negligible quantum pressure and can be readily applied also to other physical systems, in particular atomic Bose-Einstein condensates. Finally we discuss ongoing experiments to observe superradiance in photon fluids and how our time domain analysis can be used to characterize superradiant scattering in nonideal experimental conditions.

Original languageEnglish
Article number024037
JournalPhysical Review D
Volume100
Issue number2
DOIs
Publication statusPublished - 18 Jul 2019

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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