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/lp/american-physical-society-aps/spatially-extended-unruh-dewitt-detectors-for-relativistic-quantum-4UKKMgahCn
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- Publisher
- American Physical Society (APS)
- Copyright
- © 2014 American Physical Society
- Subject
- ARTICLES; Field Theory, Formal Particle Theory
- ISSN
- 1550-7998
- eISSN
- 1550-2368
- DOI
- 10.1103/PhysRevD.89.085041
- Publisher site
- See Article on Publisher Site
Abstract
Unruh-DeWitt detectors interacting locally with a quantum field are systems under consideration for relativistic quantum information processing. In most works, the detectors are assumed to be pointlike and, therefore, couple with the same strength to all modes of the field spectrum. We propose the use of a more realistic detector model where the detector has a finite size conveniently tailored by a spatial profile. We design a spatial profile such that the detector, when inertial, naturally couples to a peaked distribution of Minkowski modes. In the uniformly accelerated case, the detector couples to a peaked distribution of Rindler modes. Such distributions are of special interest in the analysis of entanglement in noninetial frames. We use our detector model to show the noise detected in the Minkowski vacuum and in single particle states is a function of the detector’s acceleration.
Journal
Physical Review D – American Physical Society (APS)
Published: Apr 29, 2014