Unveiling quantum complementarity tradeoffs in relativistic scenarios

• URL: http://arxiv.org/abs/2306.08136v3
• Date: Tue, 28 May 2024 13:29:55 GMT
• Title: Unveiling quantum complementarity tradeoffs in relativistic scenarios
• Authors: Marcos L. W. Basso, Ismael L. Paiva, Pedro R. Dieguez,
• Abstract summary: We show how the tradeoff between quantities of a complete complementarity relation is modified in an arbitrary spacetime for a particle with an internal spin. Our results extend the finding that general relativity induces a universal decoherence effect on quantum superpositions.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Complementarity plays a pivotal role in understanding a diverse range of quantum phenomena. Here, we show how the tradeoff between quantities of a complete complementarity relation is modified in an arbitrary spacetime for a particle with an internal spin. This effect stems from local Wigner rotations in the spacetime, which couple the spin to the system's external degrees of freedom. To conduct our study, we utilize two generalized delayed-choice interferometers. Despite differences in complementarity tradeoffs inside the interferometers, the interferometric visibility of both setups coincides in any relativistic regime. Our results extend the finding that general relativity induces a universal decoherence effect on quantum superpositions, as local Wigner rotations, being purely kinematical, preclude any spin dynamics. To illustrate, we analyze the Newtonian limit of our results.

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