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Proceedings Paper

Is quantum secret sharing different to the sharing of a quantum secret?
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Paper Abstract

We present an experimental scheme to perform continuous variable (2,3) threshold quantum secret sharing on the quadratures amplitudes of bright light beams. It requires a pair of entangled light beams and an electro-optic feedforward loop for the reconstruction of the secret. We examine the efficacy of quantum secret sharing in terms of fidelity, as well as the signal transfer coefficients and the conditional variances of the reconstructed output state. We show that, in the ideal limit, perfect secret reconstruction is possible. We discuss two different definitions of quantum secret sharing: the sharing of a quantum secret and the sharing of a classical secret with quantum resources.

Paper Details

Date Published: 3 February 2004
PDF: 7 pages
Proc. SPIE 5161, Quantum Communications and Quantum Imaging, (3 February 2004); doi: 10.1117/12.505349
Show Author Affiliations
Andrew M. Lance, Australian National Univ. (Australia)
Thomas Symul, Australian National Univ. (Australia)
Warwick P. Bowen, Australian National Univ. (Australia)
Tomas Tyc, Masaryk Univ. (Czech Republic)
Macquarie Univ. (Australia)
Barry C. Sanders, Macquarie Univ. (Australia)
Ping Koy Lam, Australian National Univ. (Australia)

Published in SPIE Proceedings Vol. 5161:
Quantum Communications and Quantum Imaging
Ronald E. Meyers; Yanhua Shih, Editor(s)

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