How to share a continuous-variable quantum secret by optical interferometry

TYC, Tomáš and Barry C. SANDERS. How to share a continuous-variable quantum secret by optical interferometry. Physical Review A. 2002, vol. 65, No 4, p. 042310-42314. ISSN 1050-2947.

Basic information

Original name

How to share a continuous-variable quantum secret by optical interferometry

Authors

TYC, Tomáš and Barry C. SANDERS

Edition

Physical Review A, 2002, 1050-2947

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Other information

Language

English

Type of outcome

Article in a journal

Field of Study

10301 Atomic, molecular and chemical physics

Country of publisher

United States of America

Confidentiality degree

is not subject to a state or trade secret

References:

URL

Impact factor

Impact factor: 2.986

Organization unit

Faculty of Science

Keywords in English

quantum secret; squeezing; quadrature; interferometry

Tags

interferometry, quadrature, quantum secret, squeezing

Tags

Reviewed

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Abstract

V originále

We develop the theory of continuous-variable quantum secret sharing and propose its interferometric realization using passive and active optical elements. In the ideal case of infinite squeezing, a fidelity F of unity can be achieved with respect to reconstructing the quantum secret. We quantify the reduction in fidelity for the (2,3) threshold scheme due to finite squeezing and establish the condition for verifying that genuine quantum secret sharing has occurred.