Optical nonlinearity in a quantum dot–microcavity system under an external magnetic field

• DOI: 10.1364/josab.31.000296
• Publication Date: 2014-01-21T21:51:03Z
• Authors: Wen Zhang; Zhongyuan Yu; Yumin Liu; Yiwei Peng
• Keywords: Optical microcavity

We theoretically study the dynamics of a strongly coupled quantum dot–bimodal microcavity system under an external magnetic field, where nondegenerate excitonic spin states caused by Zeeman effect are to both orthogonal cavity modes. develop effective electrodynamics model, demonstrate polarization-related nonlinear response linearly polarized pulse excitation calculating time-resolved intracavity photon number, and investigate dependence parameters on nonlinearity. In addition, we show that, when driven two pulses with perpendicular polarization relative time delay, suppresses delayed one, which can be applied optical switching at single-photon level.