Relativistic Quantum Information in Detectors-Field Interactions

Abstract

We review Unruh-DeWitt detectors and other models of detector-field interaction in a relativistic quantum field theory setting as a tool for extracting detector-detector, field-field and detector-field correlation functions of interest in quantum information science, from entanglement dynamics to quantum teleportation. We in particular highlight the contrast between the results obtained from linear perturbation theory which can be justified provided switching effects are properly accounted for, and the nonperturbative effects from available analytic expressions which incorporate the backreaction effects of the quantum field on the detector behaviour.

21 pages, 3 figures. Prepared for the special focus issue on RQI

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• Relativistic Quantum Information in Detectors-Field Interactions
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Cited by in corpus (6)

• Relativistic Quantum Information in Detectors-Field Interactions
• Onset and decay of the 1+1 Hawking-Unruh effect: what the derivative-coupling detector saw
• Entanglement harvesting for Unruh-DeWitt detectors in circular motion
• Quantum radiation by an Unruh-DeWitt detector in oscillatory motion
• Uniformly accelerated Brownian oscillator in (2+1)D: temperature-dependent dissipation and frequency shift
• Unruh-DeWitt detector's response to a non-relativistic particle