Strong no-go theorem for Gaussian quantum bit commitment
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Magnin-2010-Strong no-go theorem for Gaussian quantum bit commitment.pdf
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Author(s)
Magnin, Loick
Magniez, Frederic
Leverrier, Anthony
Cerf, Nicolas J.
Date Issued
January 2010
Journal
Physical review A
Publisher
American Physical Society
Citation
Magnin, Loïck et al. “Strong no-go theorem for Gaussian quantum bit commitment.” Physical Review A 81.1 (2010) : n. pag. © 2010 The American Physical Society
Version
Final published version
Abstract
Unconditionally secure bit commitment is forbidden by quantum mechanics. We extend this no-go theorem to continuous-variable protocols where both players are restricted to use Gaussian states and operations, which is a reasonable assumption in current-state optical implementations. Our Gaussian no-go theorem also provides a natural counter-example to a conjecture that quantum mechanics can be rederived from the assumption that key distribution is allowed while bit commitment is forbidden in Nature.
MIT Department
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevA.81.010302
