Unconventional photon blockade in a hybrid optomechanical system with an embedded spin-triplet

TL;DR

This paper demonstrates that a hybrid optomechanical system with an embedded spin-triplet can achieve strong photon blockade even with weak coupling, using quantum interference and modulated dissipation, promising efficient single-photon sources.

Contribution

It introduces a novel hybrid system that enables strong photon blockade through quantum interference and dissipation control, even with weak optomechanical coupling.

Findings

Achieves g(2)(0)=0 indicating perfect photon blockade.

Strong photon blockade coincides with single-photon resonance under parameter tuning.

Photon blockade robustness increases with weaker phonon-spin coupling.

Abstract

The research article studies the unconventional photon blockade effect in a hybrid optomechanical system with an embedded spin-triplet state. The interaction between the optomechanical system and the spin state generates new transition paths for the destructive quantum interference of the two-photon excitation state. By analytically solving the Schrodinger equation and numerically simulating the master equation, it can be found that the modulated mechanical dissipation is essential for achieving the strong photon blockade in our system. Unlike the conventional cavity optomechanical system, the second-order correlation function g(2)(0) =0 can be obtained with the weak single-photon optomechanical coupling. By adjusting the system parameters, the strong photon blockade and the single-photon resonance can coincide, which indicates the hybrid system has the potential to be a high-quality and efficient single-photon source. Finally, the influence of the thermal noise on photon blockade is investigated. The results show that the second-order correlation function is more robust for the weaker phonon-spin coupling.