Deterministic transfer of multiqubit GHZ entangled states and quantum secret sharing between different cavities

Deterministic transfer of multiqubit GHZ entangled states and quantum secret sharing between... We propose a way for transferring Greenberger–Horne–Zeilinger (GHZ) entangled states from n qubits in one cavity to another n qubits in the other cavity. It is shown that n-qubit GHZ states $$\alpha \left| 00\ldots 0\right\rangle +\beta \left| 11\ldots 1\right\rangle $$ α 00 … 0 + β 11 … 1 with arbitrary degree of entanglement can be transferred deterministically. Both of the GHZ state transfer and the operation time are not dependent on the number of qubits, and there is no need of measurement. This proposal is quite general and can be applied to accomplish the same task for a wide range of physical qubits. Furthermore, note that the n-qubit GHZ state $$\alpha \left| 00\ldots 0\right\rangle +\beta \left| 11\ldots 1\right\rangle $$ α 00 … 0 + β 11 … 1 is a quantum-secret-sharing code for encoding a single-qubit arbitrary pure state $$\alpha \left| 0\right\rangle +\beta \left| 1\right\rangle $$ α 0 + β 1 . Thus, this work also provides a way to transfer quantum secret sharing from n qubits in one cavity to another n qubits in the other cavity. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Quantum Information Processing Springer Journals

Deterministic transfer of multiqubit GHZ entangled states and quantum secret sharing between different cavities

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Publisher
Springer US
Copyright
Copyright © 2015 by Springer Science+Business Media New York
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/s11128-015-1131-9
Publisher site
See Article on Publisher Site

Abstract

We propose a way for transferring Greenberger–Horne–Zeilinger (GHZ) entangled states from n qubits in one cavity to another n qubits in the other cavity. It is shown that n-qubit GHZ states $$\alpha \left| 00\ldots 0\right\rangle +\beta \left| 11\ldots 1\right\rangle $$ α 00 … 0 + β 11 … 1 with arbitrary degree of entanglement can be transferred deterministically. Both of the GHZ state transfer and the operation time are not dependent on the number of qubits, and there is no need of measurement. This proposal is quite general and can be applied to accomplish the same task for a wide range of physical qubits. Furthermore, note that the n-qubit GHZ state $$\alpha \left| 00\ldots 0\right\rangle +\beta \left| 11\ldots 1\right\rangle $$ α 00 … 0 + β 11 … 1 is a quantum-secret-sharing code for encoding a single-qubit arbitrary pure state $$\alpha \left| 0\right\rangle +\beta \left| 1\right\rangle $$ α 0 + β 1 . Thus, this work also provides a way to transfer quantum secret sharing from n qubits in one cavity to another n qubits in the other cavity.

Journal

Quantum Information ProcessingSpringer Journals

Published: Sep 29, 2015

References

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