中国物理B ›› 2011, Vol. 20 ›› Issue (8): 88501-088501.doi: 10.1088/1674-1056/20/8/088501

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Landau–Zener–Stückelberg interference in a multi-anticrossing system

陈劲丹1, 温学达1, 于扬1, 孙国柱2   

  1. (1)National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China; (2)Research Institute of Superconductor Electronics, Department of Electronic Science and Engineering, Nanjing University, Nanjing 210093, China
  • 收稿日期:2010-12-27 修回日期:2011-01-29 出版日期:2011-08-15 发布日期:2011-08-15
  • 基金资助:
    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).

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)†   

  1. 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
  • Received:2010-12-27 Revised:2011-01-29 Online:2011-08-15 Published:2011-08-15
  • Supported by:
    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).

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摘要： 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.

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.

Key words: anticrossing, Landau–Zener transition, coherent dynamics

中图分类号:  (Josephson devices)

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