Localizing quantum fields with time-dependent potentials

• URL: http://arxiv.org/abs/2502.02643v1
• Date: Tue, 04 Feb 2025 19:00:02 GMT
• Title: Localizing quantum fields with time-dependent potentials
• Authors: Boris Ragula, Bruno de S. L. Torres, Erik Schnetter, Eduardo Martín-Martínez,
• Abstract summary: We show that it is possible to do this without introducing non-negligible mixedness in localized modes of the field. We discuss how this addresses the concerns, raised in previous literature, that the high degree of entanglement of regular states in QFT may hinder relativistic quantum information protocols.
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• Abstract: In this paper we study the effect of localizing quantum field degrees of freedom by dynamically growing cavity walls through a time-dependent potential. We use our results to show that it is possible to do this without introducing non-negligible mixedness in localized modes of the field. We discuss how this addresses the concerns, raised in previous literature, that the high degree of entanglement of regular states in QFT may hinder relativistic quantum information protocols that make use of localized relativistic probes.

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