Unruh effect in quantum information beyond the single-mode approximation
By David Edward Bruschi, Jorma Louko, Eduardo San Martín-Martinez, A. Dragan, I. Fuentes. 2010
242 citations recorded by the source corpus.
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.
Subfields: Atomic and Molecular Physics, and Optics
View Paper: https://www.semanticscholar.org/paper/b95b651ebfe639e5c96b647ccc4a45eab857d2a4
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In Atomic and Molecular Physics, and Optics
Citations in the corpus
- Quantum coherence and geometric quantum discord (2017, background): “Bruschi et al. (2010) performed that an inertial observer has the freedom to create excitations in any accessible modes Ω j,∀ j rather than a typical mode.”
- The classical-quantum boundary for correlations: Discord and related measures (2011, unknown): “In this type of model, (see for example (Bruschi et al., 2010)), an inertial observer A shares an initially entangled qubit with an accelerating R (for Rob, relativistic Bob) following a world line tR(τ) =a −1 sinh(aτ) and zR(τ) = a −1 cosh(aτ) (127) with acceleration a and proper time τ .”