Quantum signaling in relativistic motion and across acceleration horizons. (English) Zbl 1373.81111
J. Phys. A, Math. Theor. 50, No. 35, Article ID 355401, 27 p. (2017); corrigendum ibid. 53, No. 18, Article ID 189501, 3 p. (2020).
Summary: The quantum channel between two particle detectors provides a prototype framework for the study of wireless quantum communication via relativistic quantum fields. In this article we calculate the classical channel capacity between two Unruh-DeWitt detectors arising from couplings within the perturbative regime. To this end, we identify the detector states which achieve maximal signal strength. We use these results to investigate the impact of relativistic effects on signaling between detectors in inertial and uniformly accelerated motion which communicate via a massless field in Minkowski spacetime.
MSC:
| 81P45 | Quantum information, communication, networks (quantum-theoretic aspects) |
| 83C05 | Einstein’s equations (general structure, canonical formalism, Cauchy problems) |
| 81Q35 | Quantum mechanics on special spaces: manifolds, fractals, graphs, lattices |
| 81T20 | Quantum field theory on curved space or space-time backgrounds |
| 83C47 | Methods of quantum field theory in general relativity and gravitational theory |
Keywords:
relativistic quantum communication; Unruh-DeWitt particle detector; information propagation in relativistic quantum fields; communication across acceleration horizonReferences:
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