Decoherence and Loss of Entanglement in Acoustic Black Holes

FERNANDO C. LOMBARDO, GUSTAVO J. TURIACI

PHYSICAL REVIEW LETTERS

AMER PHYSICAL SOC

Lugar: New York; Año: 2012 vol. 168 p. 2613011 - 2613015

0031-9007

We study the process of decoherence in acoustic black holes. We focus on the ion trap model proposed by Horstmann et al. [Phys. Rev. Lett. 104, 250403 (2010)], but the formalism is general to any experimental implementation. For that particular setup, we compute the decoherence time for the experimental parameters that they proposed. We find that a quantum to classical transition occurs during the measurement, and we propose improved parameters to avoid such a feature. We also study the entanglement between the Hawking-pair phonons for an acoustic black hole while in contact with a reservoir, through the quantum correlations, showing that they remain strongly correlated for small enough times and temperatures.