Multi-party quantum state sharing of an arbitrary multi-qubit state via $$\chi$$ χ -type entangled states

Multi-party quantum state sharing of an arbitrary multi-qubit state via $$\chi$$ χ -type... By using the $$\chi$$ χ -type entangled states, a novel scheme for multi-party quantum state sharing (MQSTS) of an arbitrary multi-qubit state is investigated. It is shown that the MQSTS scheme can be faithfully realized by performing appropriate Bell state measurements, Z basis measurements and local unitary operations, rather than multi-qubit entanglement or multi-particle joint measurements. Thus, our MQSTS scheme is more convenient in a practical application than some previous schemes. Furthermore, its intrinsic efficiency for qubits approaches 100 %, and the total efficiency really approaches the maximal value, which is higher than those of the previous MQSTS schemes. Finally, we analyze the security from the views of participant attack and outside attack in detail. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Multi-party quantum state sharing of an arbitrary multi-qubit state via $$\chi$$ χ -type entangled states

, Volume 13 (9) – Jul 25, 2014
18 pages

/lp/springer_journal/multi-party-quantum-state-sharing-of-an-arbitrary-multi-qubit-state-aXgKyMnIL1
Publisher
Springer US
Subject
Physics; Quantum Information Technology, Spintronics; Quantum Computing; Data Structures, Cryptology and Information Theory; Quantum Physics; Mathematical Physics
ISSN
1570-0755
eISSN
1573-1332
D.O.I.
10.1007/s11128-014-0800-4
Publisher site
See Article on Publisher Site

Abstract

By using the $$\chi$$ χ -type entangled states, a novel scheme for multi-party quantum state sharing (MQSTS) of an arbitrary multi-qubit state is investigated. It is shown that the MQSTS scheme can be faithfully realized by performing appropriate Bell state measurements, Z basis measurements and local unitary operations, rather than multi-qubit entanglement or multi-particle joint measurements. Thus, our MQSTS scheme is more convenient in a practical application than some previous schemes. Furthermore, its intrinsic efficiency for qubits approaches 100 %, and the total efficiency really approaches the maximal value, which is higher than those of the previous MQSTS schemes. Finally, we analyze the security from the views of participant attack and outside attack in detail.

Journal

Quantum Information ProcessingSpringer Journals

Published: Jul 25, 2014

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