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Distributed quantum computation with superconducting qubit via LC circuit using dressed states |
| Cao Shuaia, Fang Mao-Fab, Xiao Xingb, Li Yan-Lingb, Wu Chaoc |
| a College of Sciences, South China Agricultural University, Guangzhou 510642, China; b Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics, Hunan Normal University, Changsha 410081, China; c Key Laboratory of Low-Dimensional Quantum Structures and Quantum Control of Ministry of Education, and Department of Physics, Hunan Normal University, Changsha 410081, China; College of Sciences, South China Agricultural University, Guangzhou 510642, Chin |
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Abstract A scheme is proposed where two superconducting qubits driven by a classical field interacting separately with two distant LC circuits connected by another LC circuit through mutual inductance, are used for implementing quantum gates. By using dressed states, quantum state transfer and quantum entangling gate can be implemented. With the help of the time-dependent electromagnetic field, any two dressed qubits can be selectively coupled to the data bus (the last LC circuit), then quantum state can be transferred from one dressed qubit to another and multi-mode entangled state can also be formed. As a result, the promising perspectives for quantum information processing of mesoscopic superconducting qubits are obtained and the distributed and scalable quantum computation can be implemented in this scheme.
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Received: 03 October 2009
Revised: 05 February 2010
Published: 15 February 2011
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PACS:
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03.67.Lx
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(Quantum computation architectures and implementations)
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05.60.Gg
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(Quantum transport)
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74.50.+r
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(Tunneling phenomena; Josephson effects)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11074072), the Natural Science Foundation of Hunan Province of China (Grant Nos. 07JJ3013 and 07JJ5003), and the Science Foundation of the Education Bureau of Hunan Province of China (Grant No. 06A038). |
Cite this article:
Wu Chao, Fang Mao-Fa, Xiao Xing, Li Yan-Ling, Cao Shuai Distributed quantum computation with superconducting qubit via LC circuit using dressed states 2011 Chin. Phys. B 20 020305
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