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Modified SQUID Operator Equation for a Single-Qubit Structure Coupled to a Quantum Resonator |
| LIANG Bao-Long1, WANG Ji-Suo1, FAN Hong-Yi2,3, MENG Xiang-Guo1 |
| 1School of Physics Science and Information Engineering, Liaocheng University, Shandong 2520592Department of Material Science and Engineering, University of Science and Technology of China, Hefei 2300263Department of Physics, Shanghai Jiao Tong University, Shanghai 200030 |
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| Cite this article: |
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LIANG Bao-Long, WANG Ji-Suo, FAN Hong-Yi et al 2008 Chin. Phys. Lett. 25 3753-3756 |
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Abstract Role of self-inductance in superconducting quantum interference device (SQUID) charge qubit is considered. It is found that when an SQUID charge qubit is coupled to a quantum LC resonator, the SQUID voltage operator equation is modified in accompanying with the modification of operator Faraday equation describing the inductance. It is shown that when the extra energy is applied to the junction, the mean phase will be squeezed according to a damping factor.
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| Keywords:
73.23.-b
74.50.+r
85.25.Cp
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Received: 20 April 2008
Published: 26 September 2008
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| PACS: |
73.23.-b
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(Electronic transport in mesoscopic systems)
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74.50.+r
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(Tunneling phenomena; Josephson effects)
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85.25.Cp
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(Josephson devices)
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