Covert information sharing via ghost displacement

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Zanforlin, U. and Tatsi, G. and Jeffers, J. and Buller, G. S. (2023) Covert information sharing via ghost displacement. Physical Review A, 107 (2). 022619. ISSN 2469-9926 (https://doi.org/10.1103/PhysRevA.107.022619)

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Abstract

Ghost imaging research has demonstrated that it is possible to reproduce an image of an object that has not interacted with the imaging light. In this paper we describe theoretically and demonstrate experimentally a coherent displacement imposed nonlocally on one mode of a two-mode state, replicating the ghost imaging effect in the coherent-state basis. We use it to show the possibility of a form of covert information sharing via a ghost displacement operation which enables two distant users to retrieve amplitude and phase information modulated onto a phase-independent thermal state, based only on correlated detection statistics. The displacement operation also provides a secondary probabilistic amplification effect on the mean photon number of the displaced thermal state, which could be exploited for covert quantum illumination experiments.

ORCID iDs

Zanforlin, U., Tatsi, G., Jeffers, J. ORCID logoORCID: https://orcid.org/0000-0002-8573-1675 and Buller, G. S.;
  • Item type:Article
    ID code:85258
    Dates:
    Date
    Event
    24 February 2023
    Published
    3 January 2023
    Accepted
    Subjects:Science > Physics > Optics. Light
    Department:Faculty of Science > Physics
    Depositing user: Pure Administrator
    Date deposited:25 Apr 2023 09:41
    Last modified:11 Nov 2024 13:55
    Related URLs:
    URI:https://strathprints.strath.ac.uk/id/eprint/85258
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