2016/01/31 by Xiu Gu, Sai-nan Huai, Sai-Nan Huai +2 · 40 citations
Computer Science · Physics and Astronomy · #Electromagnetically induced grating #Electromagnetically induced transparency #Law #Mechanical and Optical Resonators #Optoelectronics #Physics #Polariton #Political science #Quantum Information and Cryptography #Quantum electrodynamics #Quantum optics and atomic interactions #Transparency (behavior) #quant-ph
paper · pdf · doi:10.1103/physreva.93.063827
published in Physical Review A 93(6) (American Physical Society) · 12 pages, 8 figures
arxiv created 2016/02/03 · openalex publication_date 2016/06/14 · arxiv updated 2016/06/17 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
Electromagnetically induced transparency (EIT) has been extensively studied in various systems. However, it is not easy to observe in superconducting quantum circuits (SQCs) because the Rabi frequency of the strong-controlling field corresponding to EIT is limited by the decay rates of the SQCs. Here, we show that EIT can be achieved by engineering decay rates in a superconducting circuit QED system through a classical driving field on the qubit. Without such a driving field, the dressed states of the system, describing a superconducting qubit coupled to a cavity field, are approximately product states of the cavity and qubit states in the large-detuning regime. However, the driving field can strongly mix these dressed states. These doubly dressed states, here called polariton states, are formed by the driving field and dressed states, and are a mixture of light and matter. The weights of the qubit and cavity field in the polariton states can now be tuned by the driving field, and thus the decay rates of the polariton states can be changed. We choose the three lowest-energy polariton states with a \mathrm\ensuremathΛ-type transition in such a driven circuit QED system, and demonstrate how EIT and Autler-Townes splitting can be realized in this compound system. We believe that this study will be helpful for EIT experiments using SQCs.