Preparation of a three-photon state in a nonlinear cavity–quantum dot system
Juan Camilo López Carreño, Herbert Vinck-Posada · Physica Scripta · 2014
We study theoretically the properties of a three-photon state prepared inside a semiconductor cavity, due to the interaction between a quantum dot and an electromagnetic field, and two consecutive spontaneous parametric downconversion (SPDC) processes. Thus, we consider a scheme involving three modes of the electromagnetic field, whose frequencies are given by the SPDC processes: ω 0 → ω 1 + ω 2 and ω 2 → ω 1 + ω 1 . Furthermore, we study the low excitation regime in which a three-photon state is accessible within the system's dynamics.