https://doi.org/10.1140/epjqt/s40507-024-00252-y
Research
Continuous variable entanglement between propagating optical modes using optomechanics
1
Department of Physics, Birla Institute of Technology & Science, Pilani, Hyderabad Campus, 500078, Hyderabad, Telangana, India
2
Center for Theoretical Physics & School of Physics and Optoelectronic Engineering, Hainan University, 570228, Haikou, China
b
yongli@hainanu.edu.cn
c
sankar@hyderabad.bits-pilani.ac.in
Received:
26
October
2023
Accepted:
4
June
2024
Published online:
20
June
2024
In this study, a method for entangling two spatially separated output laser fields from an optomechanical cavity is proposed. In the existing standard methods, entanglement is created by driving the two-mode squeezing part of the linearized optomechanical interaction;, however our method generates entanglement using the quantum back-action nullifying meter technique. As a result, entanglement can be generated outside the blue sideband frequency in both resolved and unresolved sideband regimes. We further show that the system is stable in the entire region where the Duan criterion for inseparability is fulfilled. The effect of thermal noise on the generated entanglement is examined. Finally, we compare this technique with standard methods for entanglement generation using optomechanics.
Key words: Entanglement / Optomechanics / Radiation pressure force / Quantum back-action
© The Author(s) 2024
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