Robustness of entanglement in Hawking radiation for optical systems immersed in thermal baths

Abstract

Entanglement is the quantum signature of Hawking's particle pair-creation from causal horizons, for gravitational and analog systems alike. Ambient thermal fluctuations, ubiquitous in realistic situations, strongly affects the entanglement generated in the Hawking process, completely extinguishing it when the ambient temperature is comparable to the Hawking temperature. In this work, we show that optical analog systems have a built-in robustness to thermal fluctuations which are at rest in the laboratory. In such systems, horizons move relative to the laboratory frame at velocities close to the speed of light. We find that a subtle interplay between this relative velocity and dispersion protects the Hawking-generated entanglement -- allowing ambient temperatures several orders of magnitude larger than the Hawking temperature without significantly affecting entanglement.

arXiv comment13 + 3 pages, 5 figures. Comments and questions welcome

References in corpus (26)

• Separability Criterion for Density Matrices
• Gaussian Quantum Information
• The logarithmic negativity: A full entanglement monotone that is not convex
• Continuous-variable optical quantum state tomography
• Fiber-optical analogue of the event horizon
• Observation of Stimulated Hawking Radiation in Optics
• Black/White hole radiation from dispersive theories
• Cost of quantum entanglement simplified
• Spectrum and entanglement of phonons in quantum fluids of light
• Spectral properties of acoustic black hole radiation: Broadening the horizon
• Hawking radiation in dispersive theories, the two regimes
• Probing the thermal character of analogue Hawking radiation for shallow water waves?
• Derivation of Hawking radiation in dispersive dielectric media
• Phonon spectrum and correlations in a transonic flow of an atomic Bose gas
• Blackbody emission from light interacting with an effective moving dispersive medium
• Violation of Cauchy-Schwarz inequalities by spontaneous Hawking radiation in resonant boson structures
• On the robustness of entanglement in analogue gravity systems
• Optical analogues of black-hole horizons
• Hawking radiation by Kerr black holes and conformal symmetry
• On the robustness of acoustic black hole spectra
• The Theory of Optical Black Hole Lasers
• $\alpha$-Logarithmic negativity
• Stimulating the Quantum Aspects of an Optical Analog White-Black Hole
• Symplectic circuits, entanglement, and stimulated Hawking radiation in analog gravity
• Hawking radiation in optics and beyond
• Hawking temperature in dispersive media: Analytical and numerical study

Cited by in corpus (3)

• Toward the Observation of Entangled Pairs in BEC analogue Expanding Universes
• Violation of Bell inequalities in an analogue black hole
• Polariton Fluids as Quantum Field Theory Simulators on Tailored Curved Spacetimes