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  • Letter
  • Open Access

Entropy suppression through quantum interference in electric pulses

Gerald V. Dunne1,*, Adrien Florio2,3,†, and Dmitri E. Kharzeev2,3,‡

  • 1Department of Physics, University of Connecticut, Storrs, Connecticut 06269-3046, USA
  • 2Center for Nuclear Theory, Department of Physics and Astronomy, Stony Brook University, Stony Brook, New York 11794-3800, USA
  • 3Department of Physics, Brookhaven National Laboratory, Upton, New York 11973-5000, USA

  • *gerald.dunne@uconn.edu
  • †aflorio@bnl.gov
  • ‡dmitri.kharzeev@stonybrook.edu
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Phys. Rev. D 108, L031901 – Published 9 August, 2023

DOI: https://doi.org/10.1103/PhysRevD.108.L031901

Abstract

The Schwinger process in strong electric fields creates particles and antiparticles that are entangled. The entropy of entanglement between particles and antiparticles has been found to be equal to the statistical Gibbs entropy of the produced system. Here we study the effect of quantum interference in sequences of electric pulses, and show that quantum interference suppresses the entanglement entropy of the created quantum state. This is potentially relevant to quantum-enhanced classical communications. Our results can be extended to a wide variety of two-level quantum systems.

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Phys. Rev. D 108, L031901– Published 9 August, 2023
  • Received 5 January 2023
  • Accepted 18 July 2023
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