Universality of Stationary Entanglement in an Optomechanical System Driven by Non-Markovian Noise and Squeezed Light
- Author(s)
- Su Direkci, Klemens Winkler, Corentin Gut, Markus Aspelmeyer, Yanbei Chen
- Abstract
Optomechanical systems subjected to environmental noise give rise to rich physical phenomena. We investigate entanglement between a mechanical oscillator and the reflected coherent optical field in a general, not necessarily Markovian environment. For the input optical field, we consider stationary Gaussian states and frequency-dependent squeezing. We demonstrate that for a coherent laser drive, either unsqueezed or squeezed in a frequency-independent manner, optomechanical entanglement is destroyed after a threshold that depends only on the environmental noises - independent of the coherent coupling between the oscillator and the optical field, or the squeeze factor. In this way, we have found a universal entangling-disentangling transition. We also show that for a configuration in which the oscillator and the reflected field are separable, entanglement cannot be generated by incorporating frequency-dependent squeezing in the optical field.
- Organisation(s)
- Quantum Optics, Quantum Nanophysics and Quantum Information
- External organisation(s)
- California Institute of Technology Division of Engineering and Applied Science, Present Address: KEEQuand GmbH, Österreichische Akademie der Wissenschaften (ÖAW)
- Journal
- Physical review letters
- Volume
- 135
- No. of pages
- 7
- ISSN
- 0031-9007
- DOI
- https://doi.org/10.48550/arXiv.2502.02979
- Publication date
- 10-2025
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103025 Quantum mechanics, 103021 Optics
- ASJC Scopus subject areas
- General Physics and Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/9721abd3-05d7-4a36-8c87-e1d5a0d0d87c