Optomechanical entanglement at room temperature: a simulation study with realistic conditions

TL;DR

This paper demonstrates through simulation that optomechanical systems can generate quantum entanglement at room temperature despite realistic challenges like thermal noise and optical loss, advancing practical quantum technologies.

Contribution

It provides a detailed numerical analysis of ponderomotive entanglement considering real experimental limitations, which was previously analytically intractable.

Findings

Entanglement can be achieved at room temperature under realistic conditions.

Thermal noise and optical loss significantly affect entanglement strength.

Simulation results guide future experimental development of optomechanical entanglement devices.

Abstract

Quantum entanglement is the key to many applications like quantum key distribution, quantum teleportation, and quantum sensing. However, reliably generating quantum entanglement in macroscopic systems has proved to be a challenge. Here, we present a detailed analysis of ponderomotive entanglement generation which utilizes optomechanical interactions to create quantum correlations. We numerically calculate an entanglement measure -- the logarithmic negativity -- for the quantitative assessment of the entanglement. Experimental limitations, including thermal noise and optical loss, from measurements of an existing experiment were included in the calculation, which is intractable to solve analytically. This work will play an important role in the development of ponderomotive entanglement devices.