Investigation of Decoherence of Superconducting Charge Qubit Entangled with the Environment |
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| Authors: | Ying-Hua Ji |
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| Institution: | (1) Department of Physics, Jiangxi Normal University, Nanchang, Jiangxi, 330022, China;(2) Key Laboratory of Optoelectronic & Telecommunication of Jiangxi, Nanchang, Jiangxi, 330022, China |
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| Abstract: | In the Born-Markov approximation, a method that calculates the energy relaxation time T
1 and the decoherence time T
2 of superconducting qubits is given by solving the set of Bloch-Redfield equations and considering the results of decoherence
of a superconducting charge qubit. Compared to the spin-boson model, it not only contains the decoherence being caused by
the dissipative environment, but also includes the decoherence being generated by the dissipative elements in a superconducting
electronic circuit. Hence, it is good for studying the decoherence of superconducting qubits comprehensively. |
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| Keywords: | Charge qubit Decoherence The Born-Markov approximation |
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