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How Quantum is Quantum Counterfactual Communication?

Lookup NU author(s): Dr Jonte HanceORCiD

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Abstract

Quantum Counterfactual Communication is the recently-proposed idea of using quantum physics to send messages between two parties, without any matter/energy transfer associated with the bits sent. While this has excited massive interest, both for potential ‘unhackable’ communication, and insight into the foundations of quantum mechanics, it has been asked whether this process is essentially quantum, or could be performed classically. We examine counterfactual communication, both classical and quantum, and show that the protocols proposed so far for sending signals that don’t involve matter/energy transfer associated with the bits sent must be quantum, insofar as they require wave-particle duality.

Publication metadata

Author(s): Hance JR, Ladyman J, Rarity J

Publication type: Article

Publication status: Published

Journal: Foundations of Physics

Year: 2021

Volume: 51

Print publication date: 04/02/2021

Online publication date: 04/02/2021

Acceptance date: 04/12/2020

Date deposited: 08/04/2024

ISSN (print): 0015-9018

ISSN (electronic): 1572-9516

Publisher: Springer New York LLC

URL: https://doi.org/10.1007/s10701-021-00412-5

DOI: 10.1007/s10701-021-00412-5

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