Efficient scheme for multipartite entanglement and quantum information processing with trapped ions

Journal Article · Thu Dec 15 04:00:00 EST 2005 · Physical Review. A

DOI:https://doi.org/10.1103/PHYSREVA.72.0· OSTI ID:20786259

Wenxing, Yang; Zhiming, Zhan; Jiahua, Li ^[1]

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1. State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Center for Cold Atom Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071 (China) and Guaduate School, Chinese Academy of Sciences, Beijing 100080 (China)

In this paper, based on the recent experiment by Roos et al. [Science 304, 1478 (2004)], a theoretical scheme is proposed to create the multipartite entanglement of many trapped ions and implement a two-qubit quantum phase gate between two ions in ion trap. In the scheme, the ion is illuminated by a single laser tuned to the first lower vibrational sideband. We also show that the scheme can be used to directly transfer information between two ions. The scheme has the advantage that it does not use the vibrational mode as the data bus and only requires a single resonant interaction. Thus the scheme is very simple and the quantum dynamics operation can be realized at a high speed. In view of the decoherence mechanism, the simplification for the entangled state preparation and experimental implementation of quantum logic operation may become crucial.

• OSTI ID: 20786259
• Journal Information: Physical Review. A, Journal Name: Physical Review. A Journal Issue: 6 Vol. 72; ISSN 1050-2947; ISSN PLRAAN
• Country of Publication: United States
• Language: English

Related Subjects

74 ATOMIC AND MOLECULAR PHYSICS
DATA PROCESSING
INFORMATION THEORY
LASER RADIATION
OPERATION
OPTICS
QUANTUM ENTANGLEMENT
QUANTUM MECHANICS
QUBITS
TRAPPING
TRAPS