Quantum state sharing

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

doi:10.1117/12.546945

Quantum state sharing

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

^*Corresponding author for this work

Research output: Contribution to journal › Conference article › peer-review

4 Citations (Scopus)

Abstract

We demonstrate a multipartite protocol that utilizes entanglement to securely distribute and reconstruct a quantum state. A secret quantum state is encoded into a tripartite entangled state and distributed to three players. By collaborating together, a majority of the players can reconstruct the state, whilst the remaining player obtains nothing. This (2, 3) threshold quantum state sharing scheme is characterized in terms of fidelity (F), signal transfer (T) and reconstruction noise (V). We demonstrate a fidelity averaged over all reconstruction permutations of 0.73 ± 0.04, a level achievable only using quantum resources.

Original language	English
Pages (from-to)	100-109
Number of pages	10
Journal	Proceedings of SPIE - The International Society for Optical Engineering
Volume	5468
DOIs	https://doi.org/10.1117/12.546945
Publication status	Published - 2004
Event	Fluctuations and Noise in Photonics and Quantum Optics II - Maspalomas Duration: 26 May 2004 → 28 May 2004

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title = "Quantum state sharing",

abstract = "We demonstrate a multipartite protocol that utilizes entanglement to securely distribute and reconstruct a quantum state. A secret quantum state is encoded into a tripartite entangled state and distributed to three players. By collaborating together, a majority of the players can reconstruct the state, whilst the remaining player obtains nothing. This (2, 3) threshold quantum state sharing scheme is characterized in terms of fidelity (F), signal transfer (T) and reconstruction noise (V). We demonstrate a fidelity averaged over all reconstruction permutations of 0.73 ± 0.04, a level achievable only using quantum resources.",

keywords = "Entanglement, Optical parametric amplifier, Quantum cryptography, Quantum information, Quantum network, Quantum secret sharing, Quantum state sharing",

author = "Lance, {Andrew M.} and Thomas Symul and Bowen, {Warwick P.} and Sanders, {Barry C.} and Lam, {Ping Koy}",

year = "2004",

doi = "10.1117/12.546945",

language = "English",

volume = "5468",

pages = "100--109",

journal = "Proceedings of SPIE - The International Society for Optical Engineering",

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TY - JOUR

T1 - Quantum state sharing

AU - Lance, Andrew M.

AU - Symul, Thomas

AU - Bowen, Warwick P.

AU - Sanders, Barry C.

AU - Lam, Ping Koy

PY - 2004

Y1 - 2004

N2 - We demonstrate a multipartite protocol that utilizes entanglement to securely distribute and reconstruct a quantum state. A secret quantum state is encoded into a tripartite entangled state and distributed to three players. By collaborating together, a majority of the players can reconstruct the state, whilst the remaining player obtains nothing. This (2, 3) threshold quantum state sharing scheme is characterized in terms of fidelity (F), signal transfer (T) and reconstruction noise (V). We demonstrate a fidelity averaged over all reconstruction permutations of 0.73 ± 0.04, a level achievable only using quantum resources.

AB - We demonstrate a multipartite protocol that utilizes entanglement to securely distribute and reconstruct a quantum state. A secret quantum state is encoded into a tripartite entangled state and distributed to three players. By collaborating together, a majority of the players can reconstruct the state, whilst the remaining player obtains nothing. This (2, 3) threshold quantum state sharing scheme is characterized in terms of fidelity (F), signal transfer (T) and reconstruction noise (V). We demonstrate a fidelity averaged over all reconstruction permutations of 0.73 ± 0.04, a level achievable only using quantum resources.

KW - Entanglement

KW - Optical parametric amplifier

KW - Quantum cryptography

KW - Quantum information

KW - Quantum network

KW - Quantum secret sharing

KW - Quantum state sharing

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U2 - 10.1117/12.546945

DO - 10.1117/12.546945

M3 - Conference article

AN - SCOPUS:4344601001

SN - 0277-786X

VL - 5468

SP - 100

EP - 109

JO - Proceedings of SPIE - The International Society for Optical Engineering

JF - Proceedings of SPIE - The International Society for Optical Engineering

T2 - Fluctuations and Noise in Photonics and Quantum Optics II

Y2 - 26 May 2004 through 28 May 2004

ER -

Quantum state sharing

Abstract

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