| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1537469 | Optics Communications | 2011 | 6 Pages |
The dynamics of a composite system containing two orthogonal degenerate whispering-gallery cavity modes coupling to a quantum dot (QD) is presented by a full quantum approach. The energy levels of the quantum dot are modeled as a V-type three-level system, which consist of the ground state, right- and left-polarized excitons. The counterclockwise mode a and the clockwise mode b are coupled with the transitions corresponding to the right- and left-polarized excitons with coupling rates gR and gL, respectively. An exact solution is proposed in a real-space approach. We majorly discuss the effects of the backscattering rate β on the spectra of the transmission and reflection in a strong coupling regime. A new insight is that one can overcome the excitons' fine structure splitting of a real QD with appropriate backscattering rate β by fine designing the cavity, which would be possible for applications to produce the degenerate entangled photon pairs in a real QD system.
Research Highlights► Two whispering-gallery cavity modes are presented by a full quantum approach. ► The effects of the backscattering rate on spectra are discussed. ► Entangled photon pairs may be realized by tuning backscattering rate. ► A two-fiber-coupled microdisk system may be realized the photon transport.
