Abstract Assisted by multipartite entanglement, Quantum information may be split so that the original qubit can be reconstructed if and only if the recipients cooperate. This paper proposes an experimentally feasible scheme for splitting quantum information via W-type entangled states in cavity QED systems, where three-level Rydberg atoms interact with nonresonant cavities. Since W-type states are used as the quantum channel and the cavities are only virtually excited, the scheme is easy to implement and robust against decoherence, and the dependence on the quality factor of the cavities is greatly reduced.
Received: 06 July 2007
Revised: 09 July 2007
Accepted manuscript online:
(Quantum computation architectures and implementations)
Fund: Project supported by the National
Natural Science Foundation of China (Grant No 60677044) and the
Funds for Introduced Talent of Ocean University of China.
Cite this article:
Yu Xi-Mei(于希梅), Gu Yong-Jian(顾永建), Ma Li-Zhen(马丽珍), and Zhou Bang-An(周邦安) Scheme for splitting quantum information via W states in cavity QED systems 2008 Chin. Phys. B 17 462
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