Eur. Phys. J. Plus (2020) 135: 772
https://doi.org/10.1140/epjp/s13360-020-00789-8

Regular Article

Microwave and optical photons entanglement in a hybrid electro-optomechanical system: effect of a mechanical plasmonic waveguide at high temperatures

Faculty of science, Physics department, Vali-e-Asr university of Rafsanjan, Velayat boulevard, Rafsanjan, Iran

^a a.asgharinejad.vru@gmail.com

Received: 18 February 2020
Accepted: 17 September 2020
Published online: 29 September 2020

Abstract

In this paper, we describe a hybrid electro-optomechanical system consisting of a microwave resonator and an optical cavity which are coupled together by a plasmonic waveguide with a fixed side and another mechanically oscillating one. We show that a considerable entanglement can be obtained between optical and microwave photons at temperatures between and through our proposed system. Also, we show that it is possible to suppress effect of the temperature on entanglement between optical and microwave photons by a direct current voltage applied on both sides of the plasmonic waveguide. Furthermore, we show importance of the presence of optomechanical interaction in the system to obtain a significant entanglement between optical and microwave photons. Overall we show our system is an appropriate candidate to perform as a detector in detection of received microwave signals from an object with low reflectivity which is embedded in a bright thermal environment.