An Aharonov-Anandan phase gate in the sub-Hilbert space of a coupling flux qubits system
We study two flux qubits with a parameter coupling scenario. Under the rotating wave approximation, we truncate the 4-dimensional Hilbert space of a coupling flux qubits system to a 2-dimensional subspace spanned by two dressed states |01} and |10}. In this subspace, we illustrate how to generate an...
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Published in | Chinese physics B Vol. 21; no. 7; pp. 146 - 151 |
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Main Author | |
Format | Journal Article |
Language | English |
Published |
01.07.2012
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Subjects | |
Online Access | Get full text |
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Summary: | We study two flux qubits with a parameter coupling scenario. Under the rotating wave approximation, we truncate the 4-dimensional Hilbert space of a coupling flux qubits system to a 2-dimensional subspace spanned by two dressed states |01} and |10}. In this subspace, we illustrate how to generate an Aharnov Anandan phase, based on which, we can construct a NOT gate (as effective as a C-NOT gate) in this coupling flux qubits system. FinMly, the fidelity of the NOT gate is also calculated in the presence of the simulated classical noise. |
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Bibliography: | We study two flux qubits with a parameter coupling scenario. Under the rotating wave approximation, we truncate the 4-dimensional Hilbert space of a coupling flux qubits system to a 2-dimensional subspace spanned by two dressed states |01} and |10}. In this subspace, we illustrate how to generate an Aharnov Anandan phase, based on which, we can construct a NOT gate (as effective as a C-NOT gate) in this coupling flux qubits system. FinMly, the fidelity of the NOT gate is also calculated in the presence of the simulated classical noise. Aharonov Anandan phase, sub-Hilbert space, coupling flux qubits Zheng Guo-Lin, Deng Hui, Wu Yu-Lin, Wang Xin-Qiang, Chen Ying-Fei Zheng Dong-Ning a) College of physics, Chongqing University, Chongqing 400044, China b) Beijing National Laboratory for Condensed Matter Physics, Institute of Physics Chinese Academy of Sciences, Beijing 100190, China 11-5639/O4 ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 1674-1056 2058-3834 1741-4199 |
DOI: | 10.1088/1674-1056/21/7/070310 |