Continuous variable entanglement between propagating optical modes using optomechanics
Greeshma Gopinath (1), Yong Li (2), Sankar Davuluri (1) ((1), Department of Physics, BITS Pilani, Hyderabad Campus, Hyderabad, India, (2), Center for Theoretical Physics, School of Science, Hainan University,, Haikou 570228, China)
TL;DR
This paper introduces a method to generate continuous variable entanglement between two separated optical fields using optomechanics, demonstrating robustness against thermal noise at room temperature.
Contribution
It presents a novel approach combining radiation pressure coupling and quantum back-action nullifying meter to entangle propagating optical modes in an optomechanical setup.
Findings
Entanglement persists at room temperature with feasible parameters.
Thermal noise impact on entanglement is analyzed.
The method enables entanglement of spatially separated optical fields.
Abstract
This article proposes a new method to entangle two spatially separated output laser fields from an optomechanical cavity with a membrane in the middle. The radiation pressure force coupling is used to modify the correlations between the input and the output field quadratures. Then the laser fields at the optomechanical cavity output are entangled using the quantum back-action nullifying meter technique. The effect of thermal noise on the entanglement is studied. For experimentally feasible parameters, the entanglement between the laser fields survives upto room temperature.
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Taxonomy
TopicsMechanical and Optical Resonators · Quantum Information and Cryptography · Advanced Thermodynamics and Statistical Mechanics