Controllable nonlinear effects in a hybrid optomechanical semiconductor microcavity containing a quantum dot and Kerr medium

ABSTRACT

We theoretically investigate the nonlinear effects in a hybrid quantum optomechanical system consisting of two optically coupled semiconductor microcavities containing a quantum dot and a Kerr nonlinear substrate.The steady-state behaviour of the mean intracavity optical field demonstrates that the system can be used as an all optical switch. We further investigate the spectrum of small fluctuations in the mechanical displacement of the movable distributed Bragg reflectors and observe that normal mode splitting takes place for high Kerr nonlinearity and pump power. In addition, we have shown that steady state of the system exhibits two possible bipartite entanglements by proper tuning of the system parameters. The entanglement results suggest that the proposed system has the potential to be used in quantum communication platform. Our work demonstrates that the Kerr-nonlinearity can effectively control the optical properties of the hybrid system, which can be used to design efficient optical devices.

KEYWORDS:

• Optomechanical system
• semiconductor micro-cavity
• quantum dot
• Kerr nonlinearity

PACS:

• 03.75.Kk
• 03.75.Lm
• 42.50.Lc
• 03.65.Ta
• 05.40.Jc
• 04.80.Nn

Acknowledgments

A. B. B acknowledges Birla Institute of Technology, Pilani for the facilities to carry out this research. S. M. acknowledges University of Petroleum and Energy Studies, Dehradun for providing the facilities to accomplish this research.

Disclosure statement

No potential conflict of interest was reported by the authors.