中国物理B ›› 2014, Vol. 23 ›› Issue (5): 54206-054206.doi: 10.1088/1674-1056/23/5/054206

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Switching from positive to negative absorption with electromagnetically induced transparency in circuit quantum electrodynamics

李海超, 葛国勤   

  1. School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
  • 收稿日期:2013-08-17 修回日期:2013-10-24 出版日期:2014-05-15 发布日期:2014-05-15
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No. 11274132) and the Natural Science Foundation of Hubei Province, China.

Switching from positive to negative absorption with electromagnetically induced transparency in circuit quantum electrodynamics

Li Hai-Chao (李海超), Ge Guo-Qin (葛国勤)   

  1. School of Physics, Huazhong University of Science and Technology, Wuhan 430074, China
  • Received:2013-08-17 Revised:2013-10-24 Online:2014-05-15 Published:2014-05-15
  • Contact: Ge Guo-Qin E-mail:gqge@hust.edu.cn
  • About author:42.50.Gy; 85.25.-j; 32.80.Qk
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No. 11274132) and the Natural Science Foundation of Hubei Province, China.

摘要: We present a theoretical study of electromagnetically induced transparency (EIT) in a superconducting quantum circuit with a tunable V-shaped energy spectrum derived from two superconducting Josephson charge qubits coupled with each other through a superconducting quantum interference device. Using the density matrix formalism and the steady-state approximation, we obtain the analytical expressions of the first-order matrix element associated with the absorption and dispersion of the probe field for two different V-type schemes. Our results show that, for this superconducting quantum system, it is possible to realize a remarkable phenomenon that dynamic conversion between EIT and EIT with amplification without population inversion. Such a unique optical feature has potential applications in quantum optical devices and quantum information processing.

关键词: tunable V-shaped superconducting quantum circuit, electromagnetically induced transparency, amplification with and without population inversion

Abstract: We present a theoretical study of electromagnetically induced transparency (EIT) in a superconducting quantum circuit with a tunable V-shaped energy spectrum derived from two superconducting Josephson charge qubits coupled with each other through a superconducting quantum interference device. Using the density matrix formalism and the steady-state approximation, we obtain the analytical expressions of the first-order matrix element associated with the absorption and dispersion of the probe field for two different V-type schemes. Our results show that, for this superconducting quantum system, it is possible to realize a remarkable phenomenon that dynamic conversion between EIT and EIT with amplification without population inversion. Such a unique optical feature has potential applications in quantum optical devices and quantum information processing.

Key words: tunable V-shaped superconducting quantum circuit, electromagnetically induced transparency, amplification with and without population inversion

中图分类号:  (Effects of atomic coherence on propagation, absorption, and Amplification of light; electromagnetically induced transparency and Absorption)

  • 42.50.Gy
85.25.-j (Superconducting devices) 32.80.Qk (Coherent control of atomic interactions with photons)