Hawking spectrum for a fiber-optical analog of the event horizon

Abstract

Hawking radiation has been regarded as a more general phenomenon than in gravitational physics, in particular in laboratory analogs of the event horizon. Here we consider the fiber-optical analog of the event horizon, where intense light pulses in fibers establish horizons for probe light. Then, we calculate the Hawking spectrum in an experimentally realizable system. We found that the Hawking radiation is peaked around group-velocity horizons in which the speed of the pulse matches the group velocity of the probe light. The radiation nearly vanishes at the phase horizon where the speed of the pulse matches the phase velocity of light.

14 pages, 11 figures, 46 references

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• Symplectic circuits, entanglement, and stimulated Hawking radiation in analog gravity
• Hawking radiation in optics and beyond
• Coherent and squeezed states: introductory review of basic notions, properties and generalizations
• Sine-Gordon soliton as a model for Hawking radiation of moving black holes and quantum soliton evaporation
• Optical analogue of the Schwarzschild-Planck metric
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• Instabilities in an optical black-hole laser
• Hawking temperature in dispersive media: Analytical and numerical study
• Negative frequencies in pulse propagation equations and the double analytic signal
• Four-wave mixing and enhanced analogue Hawking effect in a nonlinear optical waveguide
• Universal quantum Hawking evaporation of integrable two-dimensional solitons