Single-photon blockade in optomechanical photonic crystal cavity with third-order nonlinearity

TL;DR

This paper demonstrates the theoretical possibility of achieving single-photon blockade in an optomechanical photonic crystal cavity with third-order nonlinearity, showing potential for quantum communication at telecom wavelengths.

Contribution

It provides analytical and numerical analysis of photon blockade in a Kerr-type nonlinear optomechanical cavity, highlighting feasibility with current device parameters and robustness against decoherence.

Findings

Photon blockade achievable at telecom wavelengths.

Analytical and numerical results are in agreement.

System remains robust against pure dephasing.

Abstract

Photon statistics in a weakly driven optomechanical photonic crystal cavity, with Kerr-type nonlinearity, is analyzed both analytically and numerically. Single-photon blockade effect is demonstrated via calculations of the zero-time-delay second-order correlation function $g^{(2)}(0)$. The analytical results obtained by solving the Schr\"{o}dinger equation are in complete conformity with the results obtained through numerical solution of the quantum master equation. The experimental feasibility with state-of-the-art device parameters is discussed. It is observed that photon blockade could be generated at the telecommunication wavelength, even at lower values of the nonlinear susceptibility parameters and in the weak single-photon optomechanical coupling regime.The system is found to be robust against pure dephasing-induced decoherences.