| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Producing and Distinguishing χ-Type Four-Qubit States in Flux Qubits |
| GAO Gui-Long1,SONG Fu-Quan2,HUANG Shou-Sheng1,WANG Yan-Wei1,FAN Zhi-Qiang1,YUAN Xian-Zhang1,JIANG Nian-Quan1** |
1College of Physics and Electric Information, Wenzhou University, Wenzhou 325035
2Department of Physics, Zhejiang Normal University, Jinhua 321004 |
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| Cite this article: |
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GAO Gui-Long, SONG Fu-Quan, HUANG Shou-Sheng et al 2012 Chin. Phys. Lett. 29 044214 |
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Abstract We propose an effective method to produce four-qubit χ-type entangled states by using flux qubits coupled to an LC circuit which acts as a quantum data bus (QDB). In our scheme, the interaction is mediated by the exchange of virtual rather than real photons because of the large detuning between flux qubits and QDB, and then QDB-induced loss can be effectively avoided. The experimental feasibility of the scheme is also presented.
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Received: 16 November 2011
Published: 04 April 2012
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| PACS: |
42.50.Dv
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(Quantum state engineering and measurements)
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85.25.Cp
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(Josephson devices)
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85.25.Dq
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(Superconducting quantum interference devices (SQUIDs))
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