Two-Phonon Blockade in Quadratically Coupled Optomechanical Systems

Photonics

卷:9

Aixi Chen¹  Zi-Yuan Li¹  Tai-Shuang Yin¹  Guang-Ri Jin¹ 

[1] Department of Physics, Zhejiang Sci-Tech University, Hangzhou 310018, China;

关键词: quadratic optomechanical coupling;    strong nonlinearity;    two-phonon blockade;   

DOI  :  10.3390/photonics9020070

来源: DOAJ

【 摘 要 】

We propose a scheme to realize the two-phonon blockade effect in a quadratically coupled optomechanical system. We consider the case that the optical cavity is simultaneously driven by a strong pumping field and a weak driving field. By strongly driving the optical cavity, the nonlinear interaction between the optical mode and the mechanical resonator can be significantly enhanced and an effective second-order nonlinearity between photons and phonons is induced. Based on this effectively strong nonlinearity, the two-phonon blockade effect can be achieved when a weak driving field is applied into the optical cavity. By contrast, we study the case of weakly driving the mechanical resonator. In this case, the single-phonon blockade is generated, while the two-phonon blockade cannot be observed. By numerically calculating the second-order and third-order correlation function, we investigate the statistical characteristics of phonons. In addition, we also study the influence of the thermal noise on the achieved two-phonon blockade effect. Our work provides an alternative approach for implementing multiphonon blockade and has potential applications in quantum information processing.

【 授权许可】

Unknown