Continuous variable (2,3) threshold quantum secret sharing schemes

Andrew M. Lance; Thomas Symul; Warwick P. Bowen; Tomás Tyc; Barry C. Sanders; Ping Koy Lam

doi:10.1088/1367-2630/5/1/304

Continuous variable (2,3) threshold quantum secret sharing schemes

Andrew M. Lance, Thomas Symul, Warwick P. Bowen, Tomás Tyc, Barry C. Sanders, Ping Koy Lam

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Abstract

We present two schemes to perform continuous variable (2, 3) threshold quantum secret sharing (QSS) on the quadrature amplitudes of bright light beams. Both schemes require a pair of entangled light beams. The first scheme utilizes two phase sensitive optical amplifiers, whilst the second uses an electro-optic feedforward loop for the reconstruction of the secret. We examine the efficacy of QSS in terms of fidelity, as well as the signal transfer coefficients and the conditional variances of the reconstructed output state. We show that both schemes in the ideal case yield perfect secret reconstruction.

Original language	English
Pages (from-to)	4.1-4.13
Number of pages	13
Journal	New Journal of Physics
Volume	5
DOIs	https://doi.org/10.1088/1367-2630/5/1/304
Publication status	Published - 2003

Bibliographical note

Copyright 2003 IOP Publishing Ltd. Reprinted from New journal of physics. This material is posted here with the permission of IOP Publishing Ltd and the authors. Use of this material is permitted for personal, research and non-commercial uses. Further information regarding the copyright applicable to this article can be viewed at http://www.iop.org/EJ/journal/-page=extra.copyright/NJP.

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T1 - Continuous variable (2,3) threshold quantum secret sharing schemes

AU - Lance, Andrew M.

AU - Symul, Thomas

AU - Bowen, Warwick P.

AU - Tyc, Tomás

AU - Sanders, Barry C.

AU - Lam, Ping Koy

N1 - Copyright 2003 IOP Publishing Ltd. Reprinted from New journal of physics. This material is posted here with the permission of IOP Publishing Ltd and the authors. Use of this material is permitted for personal, research and non-commercial uses. Further information regarding the copyright applicable to this article can be viewed at http://www.iop.org/EJ/journal/-page=extra.copyright/NJP.

PY - 2003

Y1 - 2003

N2 - We present two schemes to perform continuous variable (2, 3) threshold quantum secret sharing (QSS) on the quadrature amplitudes of bright light beams. Both schemes require a pair of entangled light beams. The first scheme utilizes two phase sensitive optical amplifiers, whilst the second uses an electro-optic feedforward loop for the reconstruction of the secret. We examine the efficacy of QSS in terms of fidelity, as well as the signal transfer coefficients and the conditional variances of the reconstructed output state. We show that both schemes in the ideal case yield perfect secret reconstruction.

AB - We present two schemes to perform continuous variable (2, 3) threshold quantum secret sharing (QSS) on the quadrature amplitudes of bright light beams. Both schemes require a pair of entangled light beams. The first scheme utilizes two phase sensitive optical amplifiers, whilst the second uses an electro-optic feedforward loop for the reconstruction of the secret. We examine the efficacy of QSS in terms of fidelity, as well as the signal transfer coefficients and the conditional variances of the reconstructed output state. We show that both schemes in the ideal case yield perfect secret reconstruction.

U2 - 10.1088/1367-2630/5/1/304

DO - 10.1088/1367-2630/5/1/304

M3 - Article

SN - 1367-2630

VL - 5

SP - 4.1-4.13

JO - New Journal of Physics

JF - New Journal of Physics

ER -

Continuous variable (2,3) threshold quantum secret sharing schemes

Abstract

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