Observation of Stimulated Hawking Radiation in an Optical Analogue - INSPIRE

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Observation of Stimulated Hawking Radiation in an Optical Analogue

Aug 28, 2018

6 pages

Published in:

Phys.Rev.Lett. 122 (2019) 1, 010404

Published: Jan 10, 2019

e-Print:

1808.09244 [gr-qc]

DOI:

10.1103/PhysRevLett.122.010404

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Abstract: (arXiv)

The theory of Hawking radiation can be tested in laboratory analogues of black holes. We use light pulses in nonlinear fiber optics to establish artificial event horizons. Each pulse generates a moving perturbation of the refractive index via the Kerr effect. Probe light perceives this as an event horizon when its group velocity, slowed down by the perturbation, matches the speed of the pulse. We have observed in our experiment that the probe stimulates Hawking radiation, which occurs in a regime of extreme nonlinear fiber optics where positive and negative frequencies mix.

General Physics: Statistical and Quantum Mechanics, Quantum Information, etc.
radiation: Hawking
velocity: group
optics: fibre
perturbation
horizon
refractive index
black hole: Kerr
nonlinear

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