Study and application of time-delayed feedback for semiconductor photon source

Nonlinear optics;Quantum optics

Chang, Chien-Yuan ; Citrin, David S. Brown, Kenneth R. Physics Wiesenfeld, Kurt Davidovic, Dragomir Chembo, Yanne K. ; Citrin, David S.

University:Georgia Institute of Technology

Department:Physics

关键词: Nonlinear optics;    Quantum optics;   

Others  :  https://smartech.gatech.edu/bitstream/1853/60714/1/CHANG-DISSERTATION-2017.pdf

美国|英语

来源: SMARTech Repository

【 摘 要 】

Time-delayed feedback introduces various dynamical behaviors when coupled with a solid-state photonic structure. The study of these behaviors is a crucial step towards development of novel applications involving measurement and manipulation of various type of solid-state photonic systems. The purpose of this work is to investigate time-delayed feedback in two different types of solid-state structures, the semiconductor lasers diode and single photon emitter. We report our results on two projects: first, we investigate the effect of time-delayed feedback with a semiconductor laser since such a system represents an excellent test bed for the study of nonlinear delay-coupled systems. Here, the feedback is achieved by reflecting the laser's output back into the laser using an external mirror. Under these circumstances, the dynamical behaviors can be described with the Lang-Kobayashi model (LK model) consisting of equations of motion for the optical field, the optical phase, and the carrier density in the active region of the laser. We performed an experiment simultaneously extracting all three dynamical variables in order to obtain a tomographic picture of the dynamics. Secondly, we proposed to explore the time-delayed feedback of a single photon emitter. The effect of time-delayed feedback on a single photon emitter in few-photon limit is considered. Specifically, we focus on the theoretical study of quantum coherent feedback of a single photon emitter that consisted of single quantum dot embedded in a micropillar cavity. Recent theoretical works by us and others have shown highly nontrivial quantum dynamics induced by the external cavity. In this work, we perform a stability analysis of a quantum system in the one-excitation subspace. We also extend the study to thetwo-excitation subspace to consider the linearity in the excitation number. The aim is to understand the stabilization effect in a coherent quantum feedback system and the dynamical regimes accessible in suitably designed structures.