2015/07/26 by Pei-Qing Jin, Jan Jeske, Andrew D. Greentree +1
Computer Science · Physics and Astronomy · #Atomic physics #Cavity quantum electrodynamics #Electromagnetically induced transparency #Open quantum system #Physics #Quantum #Quantum Information and Cryptography #Quantum and electron transport phenomena #Quantum dot #Quantum mechanics #Quantum optics and atomic interactions #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.103.045301
published as Phys. Rev. B 103, 045301 (2021) · 5 pages, 3 figures
arxiv created 2015/07/26 · openalex created_date 2016/06/24 · openalex publication_date 2021/01/07 · arxiv updated 2021/01/13 · openalex updated_date 2026/08/05
We show theoretically that a quantum dot circuit quantum electrodynamics device can be used as a probe of the Overhauser field in quantum dots. By coupling a transmission line to the interdot tunneling gate, an electromagnetically induced transparency scheme can be established, whose Fano-type interference leads to a sharp curvature in the reflection spectrum around resonance. This sharp feature persists even in the presence of the fluctuating spin bath, rendering a high-resolution method to extract the bath's statistical information. For strong nuclear spin fields, the reflection spectrum exhibits an Autler-Townes splitting, where the peak locations indicate the strengths of the Overhauser field gradient.