Event horizons are tunable factories of quantum entanglement
arXiv:2209.09980 · doi:10.1142/S0218271822420081
Abstract
That event horizons generate quantum correlations via the Hawking effect is well known. We argue, however, that the creation of entanglement can be modulated as desired, by appropriately illuminating the horizon. We adapt techniques from quantum information theory to quantify the entanglement produced during the Hawking process and show that, while ambient thermal noise (e.g., CMB radiation) degrades it, the use of squeezed inputs can boost the non-separability between the interior and exterior regions in a controlled manner. We further apply our ideas to analog event horizons concocted in the laboratory and insist that the ability to tune the generation of entanglement offers a promising route towards detecting quantum signatures of the elusive Hawking effect.
arXiv commentHonorable mention for Gravity Research Foundation 2022 Awards for Essays on Gravitation. Comments welcome. (14 pages + 3 figures)
References in corpus (17)
- Separability Criterion for Density Matrices
- The logarithmic negativity: A full entanglement monotone that is not convex
- Information in Black Hole Radiation
- Continuous-variable optical quantum state tomography
- Fiber-optical analogue of the event horizon
- Hawking Spectrum and High Frequency Dispersion
- Observation of Stimulated Hawking Radiation in Optics
- Quantum vacuum emission in a nonlinear optical medium illuminated by a strong laser pulse
- Derivation of Hawking radiation in dispersive dielectric media
- Blackbody emission from light interacting with an effective moving dispersive medium
- Optical analogues of black-hole horizons
- Hawking spectrum for a fiber-optical analog of the event horizon
- Stimulating the Quantum Aspects of an Optical Analog White-Black Hole
- The influence of spacetime curvature on quantum emission in optical analogues to gravity
- Hawking radiation in optics and beyond
- Analytical description of quantum emission in optical analogues to gravity
- The Hopfield-Kerr model and analogue black hole radiation in dielectrics