期刊
NEW JOURNAL OF PHYSICS
卷 14, 期 -, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/14/7/073041
关键词
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资金
- ARO [0726909]
- JSPS-RFBR [09-02-92114]
- MEXT Kakenhi on Quantum Cybernetics
- JSPS via FIRST program
- National Natural Science Foundation of China [11005057]
- Grants-in-Aid for Scientific Research [22224007, 12F02204, 21102002] Funding Source: KAKEN
We theoretically study the implementation of two-qubit gates in a system of two coupled superconducting qubits. In particular, we analyze two-qubit gate operations under the condition that the coupling strength is comparable with or even larger than the anharmonicity of the qubits. By numerically solving the time-dependent Schrodinger equation under the assumption of negligible decoherence, we obtain the dependence of the two-qubit gate fidelity on the system parameters in the case of both direct and indirect qubit-qubit coupling. Our numerical results can be used to identify the 'safe' parameter regime for experimentally implementing two-qubit gates with high fidelity in these systems.
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