Information Transmission Without Energy Exchange

Robert H. Jonsson, Eduardo Martín-Martínez, and Achim Kempf
Phys. Rev. Lett. 114, 110505 – Published 20 March 2015

Abstract

We show that it is possible to use a massless field in the vacuum to communicate in such a way that the signal travels arbitrarily slower than the speed of light and such that no energy is transmitted from the sender to the receiver. Instead, the receiver has to supply a signal-dependent amount of work to switch his detector on and off. This type of communication is related to Casimir-like interactions, and it is made possible by dimension—and curvature—dependent subtleties of Huygens’ principle.

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  • Received 15 May 2014

DOI:https://doi.org/10.1103/PhysRevLett.114.110505

© 2015 American Physical Society

Authors & Affiliations

Robert H. Jonsson1, Eduardo Martín-Martínez1,2,3, and Achim Kempf1,2,3

  • 1Department of Applied Mathematics, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
  • 2Institute for Quantum Computing, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada
  • 3Perimeter Institute for Theoretical Physics, 31 Caroline Street N, Waterloo, Ontario N2L 2Y5, Canada

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Issue

Vol. 114, Iss. 11 — 20 March 2015

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