Accurate phonon blockade detector composed of a quadratically coupled optomechanical system

• URL: http://arxiv.org/abs/2011.03727v1
• Date: Sat, 7 Nov 2020 08:58:32 GMT
• Title: Accurate phonon blockade detector composed of a quadratically coupled optomechanical system
• Authors: Ye-Xiong Zeng, Tesfay Gebremariam, Jian Shen, Biao Xiong, Chong Li
• Abstract summary: We propose a theoretical proposal for detecting the phonon blockade effect in a quadratically coupled optomechanical system by exploiting supervised machine learning. Our results show our scheme performs superior performance on detecting phonon blockade.
• Score: 8.361705056758531
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The observation of phonon blockade in a nanomechanical oscillator is clear evidence of its quantum nature. However, it is still a severe challenge to measure the strong phonon blockade in an optomechanical system with effective nonlinear coupling. In this paper, we propose a theoretical proposal for detecting the phonon blockade effect in a quadratically coupled optomechanical system by exploiting supervised machine learning. The detected optical signals are injected into the neural network as the input, while the output is the mechanical equal-time second-order correlation. Our results show our scheme performs superior performance on detecting phonon blockade. Specifically, it is efficient for nonlinear coupling systems; it performs a high precision for strong photon blockade; it is robust against the small disturbance of system parameters. Our work opens a promising way to build a phonon blockade detector.

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