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  • Letter
  • Open Access

Criticality of quantum energy teleportation at phase transition points in quantum field theory

Kazuki Ikeda*

  • Department of Physics and Astronomy, Co-design Center for Quantum Advantage, Stony Brook University, Stony Brook, New York 11794-3800, USA and Department of Physics and Astronomy, Center for Nuclear Theory, Stony Brook University, Stony Brook, New York 11794-3800, USA

  • *kazuki7131@gmail.com; kazuki.ikeda@stonybrook.edu
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Phys. Rev. D 107, L071502 – Published 17 April, 2023

DOI: https://doi.org/10.1103/PhysRevD.107.L071502

Abstract

Quantum field theory can be a new medium for communication through quantum energy teleportation. We perform a demonstration of quantum energy teleportation with a relativistic fermionic field theory of self-coupled fermions, called the massive Thirring model. Our results reveal that there is a close relationship between the amount of energy teleported and the phase diagram of the theory. In particular, we show that the teleported energy peaks near the phase transition points. Since these results are obtained by measuring the two local subsystems, the noise from the quantum computation can be considerably reduced, allowing for efficient quantum simulations. Moreover, it is a new entanglement-based method that reveals global structure through local measurements.

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Phys. Rev. D 107, L071502– Published 17 April, 2023
  • Received 31 January 2023
  • Accepted 30 March 2023
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Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOI. Funded by SCOAP3.

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