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Proceedings Paper

Sharing quantum secrets
Author(s): Barry C. Sanders; Tomas Tyc; David J. Rowe
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Paper Abstract

We discuss sharing quantum secrets via optical interferometry and squeezing. A secret quantum state for a single-mode field is encoded into a multimode field as an entangled state and distributed to a set of players so that certain subsets can decode the secret states, and others cannot learn anything about the state. In particular, we discuss the (k,n)-threshold scheme for optics and specifically the (2,3) scheme. An arbitrary (k,n)-threshold scheme can be achieved with no more than two single-mode squeezers.

Paper Details

Date Published: 3 February 2004
PDF: 11 pages
Proc. SPIE 5161, Quantum Communications and Quantum Imaging, (3 February 2004); doi: 10.1117/12.505063
Show Author Affiliations
Barry C. Sanders, Macquarie Univ. (Australia)
Univ. of Calgary (Canada)
Tomas Tyc, Masaryk Univ. (Czech Republic)
David J. Rowe, Univ. of Toronto (Canada)

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

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