中国物理B ›› 2008, Vol. 17 ›› Issue (1): 111-116.doi: 10.1088/1674-1056/17/1/020

• GENERAL • 上一篇    下一篇

Controlling chaos in RCL-shunted Josephson junction by delayed linear feedback

冯玉玲, 沈柯   

  1. Department of Physics, Changchun University of Science and Technology, Changchun 130022, China
  • 出版日期:2008-01-20 发布日期:2008-01-20

Controlling chaos in RCL-shunted Josephson junction by delayed linear feedback

Feng Yu-Ling(冯玉玲)† and Shen Ke(沈柯)   

  1. Department of Physics, Changchun University of Science and Technology, Changchun 130022, China
  • Online:2008-01-20 Published:2008-01-20

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摘要： The resistively--capacitively--inductively-shunted (RCL-shunted) Josephson junction (RCLSJJ) shows chaotic behaviour under some parameter conditions. Here a scheme for controlling chaos in the RCLSJJ is presented based on the linear feedback theory. Numerical simulations show that this scheme can be effectively used to control chaotic states in this junction into stable periodic states. Moreover, the different stable period states with different period numbers can be obtained by appropriately adjusting the feedback intensity and delay time without any pre-knowledge of this system required.

Abstract: The resistively--capacitively--inductively-shunted (RCL-shunted) Josephson junction (RCLSJJ) shows chaotic behaviour under some parameter conditions. Here a scheme for controlling chaos in the RCLSJJ is presented based on the linear feedback theory. Numerical simulations show that this scheme can be effectively used to control chaotic states in this junction into stable periodic states. Moreover, the different stable period states with different period numbers can be obtained by appropriately adjusting the feedback intensity and delay time without any pre-knowledge of this system required.

Key words: chaos control, RCL-shunted Josephson junction, maximum Lyapunov exponent, delayed linear feedback

中图分类号: 

  • 74.40.+k
05.45.Gg (Control of chaos, applications of chaos) 05.45.Pq (Numerical simulations of chaotic systems) 85.25.Cp (Josephson devices)