Work

Unruh effect in quantum information beyond the single-mode approximation

Year: 2010

Type: article

Abstract: We address the validity of the single-mode approximation that is commonly invoked in the analysis of entanglement in noninertial frames and in other relativistic quantum-information scenarios. We show that the single-mode approximation is not valid for arbitrary states, finding corrections to previous studies beyond such approximations in the bosonic and fermionic cases. We also exhibit a class of wave packets for which the single-mode approximation is justified subject to the peaking constraints set by an appropriate Fourier transform.

Source: Physical Review A

DOI: 10.1103/physreva.82.042332

Authors: David E. Bruschi, Jorma Louko, Eduardo Martín-Martínez, Andrzej Dragan, Ivette Fuentes

Institutions: University of Nottingham, Consejo Superior de Investigaciones Científicas, Instituto de Física Fundamental, University of Warsaw

Language: English

Topic: Quantum Electrodynamics and Casimir Effect

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: Ministerio de Ciencia e Innovación, Engineering and Physical Sciences Research Council, Science and Technology Facilities Council

Awards: G3213809458, G353560624, Physics of the Early Universe, EXPLOITING RELATIVITY FOR QUANTUM INFORMATION THEORY