Pseudo-invariant Eigen-Operator for Deriving Energy-Level Gap for Quantum Bit in Quantum Circuit |
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Authors: | Yong-Mei Liu and Ying-Hua Ji |
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Institution: | (1) California Institute of Technology, NASA Jet Propulsion Laboratory, Oak Grove Drive 4800, Pasadena, CA 91109-8099, USA |
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Abstract: | Based on the method of pseudo invariant eigenoperator (PIEO), a fully quantum mechanical scheme is investigated for the coupling between a rf SQUID qubit and an off-resonance quantized single-mode electromagnetic field in the strong coupling regime. In order to derive the systematic energy-level gap obtained by the pseudo-invariant operator of the quantum system, we give operation props for corresponding quantum manipulation. In comparison with the solution of stationary Schrödinger equation, the PIEO method could be quite concise and effective to obtain energy-level gap for the given system. |
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