Optical Bistability in Coupled Cavity System

Marc Haelterman

Hong-Du Liu

O Kang‐Hyok, Kwang‐Hyon Kim

Surabhi Yadav, Vijay Bhatt, Aranya B. Bhattacherjee +1 more

We theoretically investigate optical bistability and entanglement in a hybrid nonlinear system of two coupled cavities via a single-mode waveguide. The left cavity contains an ensemble of N quantum dots (QDs) and a Kerr medium to enhance the nonlinearity as it causes to observe the bistable behaviour of the system. We study the Kerr medium, QD ensemble, and cavity coupling effect on bistability response shown by mean intracavity photons in the left cavity. In addition, we have shown entanglement between different subsystems and found that entanglement can be generated between the two coupled cavity photons, cavity photons, and QD ensembles. Additionally, we investigate the effect of different parameters on entanglement. Our findings show that Kerr nonlinearity and the hopping parameter between the two cavities can effectively control the optical properties of the proposed hybrid system, which can be used to design efficient optical devices and the entangled optical photons have applications such as quantum information transfer.

Michael Scalora, Joseph W. Haus, C. M. Bowden

Keivan Mahmoud Aghdami, Samaneh Moshki, Reza Kheradmand +1 more

Optical bistability in an array of coupled cavities in a medium with saturable nonlinearity is investigated, because the optical bistability and domain in which the system shows two homogeneous solutions are important in the existence of solitons. This is followed by linear stability analysis of homogeneous solutions of the system in two cases (conservative and dissipative). It is also shown that inclination of the holding beam can lead to a change in the modulation instability range.