Penrose Superradiance in Nonlinear Optics
arXiv:2007.07766 · doi:10.1103/PhysRevLett.125.193902
Abstract
Particles or waves scattered from a rotating black hole can be amplified through the process of Penrose superradiance, though this cannot currently be observed in an astrophysical setting. However, analogue gravity studies can create generic rotating geometries exhibiting an ergoregion, and this led to the first observation of Penrose superradiance as the over-reflection of water waves from a rotating fluid vortex. Here we theoretically demonstrate that Penrose superradiance arises naturally in the field of nonlinear optics. In particular, we elucidate the mechanism by which a signal beam can experience gain or amplification as it glances off a strong vortex pump beam in a nonlinear defocusing medium. This involves the trapping of negative norm modes in the core of the pump vortex, as predicted by Penrose, which in turn provides a gain mechanism for the signal beam. Our results elucidate a new regime of nonlinear optics involving the notion of an ergoregion, and provide further insight into the processes involved in Penrose superradiance.
arXiv comment1 figure, 7 pages
References in corpus (29)
- Analogue Gravity
- Sonic analog of gravitational black holes in Bose-Einstein condensates
- Observation of quantum Hawking radiation and its entanglement in an analogue black hole
- Observation of self-amplifying Hawking radiation in an analog black hole laser
- Hawking radiation from ultrashort laser pulse filaments
- Dispersive, superfluid-like shock waves in nonlinear optics
- Sonic black holes in dilute Bose-Einstein condensates
- Observation of superradiance in a vortex flow
- Shocks in nonlocal media
- Bogoliubov dispersion relation and the possibility of superfluidity for weakly-interacting photons in a 2D photon fluid
- Observation of the Bogoliubov dispersion relation in a fluid of light
- Amplification of waves from a rotating body
- Analog Hawking radiation from an acoustic black hole in a flowing polariton superfluid
- Superfluid light in propagating geometries
- Acoustic black holes in a two-dimensional "photon-fluid"
- Dielectric black hole analogues
- Propagation of a quantum fluid of light in a cavityless nonlinear optical medium: General theory and response to quantum quenches
- The role of geometry in the superfluid flow of nonlocal photon fluids
- Resonant Hawking radiation in Bose-Einstein condensates
- An all-optical event horizon in an optical analogue of a Laval nozzle
- Conditions for one-dimensional supersonic flow of quantum gases
- Ergoregion instabilities in rotating two-dimensional Bose--Einstein condensates: new perspectives on the stability of quantized vortices
- Analog Kerr Black hole and Penrose effect in a Bose-Einstein Condensate
- Superradiant Amplification of Acoustic Beams via Medium Rotation
- Superradiant scattering in fluids of light
- Zel'dovich amplification in a superconducting circuit
- Dynamics Landscape for Acoustic Superradiance
- Reinventing the Zel'Dovich Wheel
- The plucked string: an example of non-normal dynamics
Cited by in corpus (10)
- Acoustic black-hole bombs and scalar clouds in a photon-fluid model
- Spectrum of collective excitations of a quantum fluid of polaritons
- Superradiant (In)stability, Greybody Radiation, and Quasinormal Modes of Rotating Black Holes in non-linear Maxwell f (R) Gravity
- Pressureless stationary solutions in a Newton-Yukawa gravity model
- Stationary scalar clouds supported by rapidly-rotating acoustic black holes in a photon-fluid model
- No-short scalar hair theorem for spinning acoustic black holes in a photon-fluid model
- Shielding of Penrose superradiance in optical black holes
- An optical analogue for rotating BTZ black holes
- Measurement of the inner horizon in the analog of rotating BTZ black holes by an improved photon fluid
- Quantum backreaction effect in optical solitons