Optimal quantum estimation of the unruh-hawking effect

Mariona Aspachs, Gerardo Adesso, Ivette Fuentes

Research output: Contribution to journalArticleResearchpeer-review

118 Citations (Scopus)


We address on general quantum-statistical grounds the problem of optimal detection of the Unruh-Hawking effect. We show that the effect signatures are magnified up to potentially observable levels if the scalar field to be probed has high mean energy from an inertial perspective: The Unruh-Hawking effect acts like an amplification channel. We prove that a field in a Fock inertial state, probed via photon counting by a noninertial detector, realizes the optimal strategy attaining the ultimate sensitivity allowed by quantum mechanics for the observation of the effect. We define the parameter regime in which the effect can be reliably revealed in laboratory experiments, regardless of the specific implementation.
Original languageEnglish
Article number151301
JournalPhysical Review Letters
Issue number15
Publication statusPublished - 8 Oct 2010


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