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This research demonstrates that intense gravitational or electromagnetic waves can suppress excitation in Unruh-DeWitt detectors, challenging previous perturbative approximations limited to weak interactions. By utilizing a non-perturbative open quantum system framework, the study provides critical insights into how quantum sensors respond to strong spacetime distortions and warped geometry. This advancement expands the theoretical understanding of detector dynamics under extreme field conditions without relying on standard weak-coupling limits.

Source coveringQuantum Zeitgeist

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Tamkang University Finds Waves Suppress Quantum Excitation

Quantum ZeitgeistAugust 31, 20264 min read

Until now, calculating how quantum detectors respond to intense spacetime distortions demanded approximations valid only when interactions were feeble. New analysis demonstrates complete responses beyond this limit, modelling Unruh-DeWitt detectors interacting with powerful gravitational or electromagnetic waves without relying on perturbative methods. These calculations reveal that even substantial plane waves suppress detector excitations from its ground state.

Gravitational or electromagnetic waves suppress excitation from a ground state to its first excited state in a quantum system such as an Unruh-DeWitt detector, advancing understanding beyond traditional approximations. Tamkang University researchers used an open quantum system framework, treating interactions between detectors and fields as dynamic rather than instantaneous, to perform non-perturbative analysis. Both gravitational and electromagnetic waves hinder energy increases within a specific quantum sensor, the Unruh-DeWitt…

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