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Landau–Zener–Stückelberg interference in a multi-anticrossing system |
Chen Jin-Dan(陈劲丹)a), Wen Xue-Da(温学达)a), Sun Guo-Zhu(孙国柱)b), and Yu Yang(于扬)a)† |
a National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China; b Research Institute of Superconductor Electronics, Department of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China |
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Abstract We propose a universal analytical method of studying the dynamics of a multi-anticrossing system subjected to driving by a single large-amplitude triangle pulse, within a time scale smaller than the dephasing time. Our approach can explain the main features of the Landau—Zener—Stückelberg interference patterns recently observed in a tripartite system [Nature Communications 1 51 (2010)]. In particular, we focus on the effect of the size of the anticrossing on interference and compare the calculated interference patterns with numerical simulations. In addition, a Fourier transform of the patterns can extract the information about the energy level spectrum.
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Received: 27 December 2010
Revised: 29 January 2011
Accepted manuscript online:
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PACS:
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85.25.Cp
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(Josephson devices)
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03.67.Lx
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(Quantum computation architectures and implementations)
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Fund: Project supported by the State Key Program for Basic Research of China (Grant No. 2006CB921801), the National Natural Science Foundation of China (Grant No. 10725415), and the Natural Science Foundation of Jangsu Province, China (Grant No. BK2010012). |
Cite this article:
Chen Jin-Dan(陈劲丹), Wen Xue-Da(温学达), Sun Guo-Zhu(孙国柱), and Yu Yang(于扬) Landau–Zener–Stückelberg interference in a multi-anticrossing system 2011 Chin. Phys. B 20 088501
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