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Enhancement of Optomechanical Squeezing of Light Using the Optical Coherent Feedback.
| Content Provider | Europe PMC |
|---|---|
| Author | Wu, Zhenhua Yi, Zhen Gu, Wenju Sun, Lihui Ficek, Zbigniew |
| Editor | Pontin, Antonio Toroš, Marko Belenchia, Alessio |
| Copyright Year | 2022 |
| Abstract | A coherent feedback scheme is used to enhance the degree of squeezing of the output field in a cavity optomechanical system. In the feedback loop, a beam splitter (BS) plays the roles of both a feedback controller and an input–output port. To realize effective enhancement, the output quadrature should take the same form as the input quadrature, and the system should operate at the deamplification situation in the meantime. This can be realized by choosing an appropriate frequency-dependent phase angle for the generalized quadrature. Additionally, both the transmissivity of the BS and the phase factor induced by time delays in the loop affect optical squeezing. For the fixed frequency, the optimal values of transmissivity and phase factor can be used to achieve the enhanced optical squeezing. The effect of optical losses on squeezing is also discussed. Optical squeezing is degraded by the introduced vacuum noise owing to the inefficient transmission in the loop. We show that the enhancement of squeezing is achievable with the parameters of the current experiments. |
| Journal | Entropy (Basel, Switzerland) |
| Volume Number | 24 |
| PubMed Central reference number | PMC9777923 |
| Issue Number | 12 |
| PubMed reference number | 36554146 |
| e-ISSN | 10994300 |
| DOI | 10.3390/e24121741 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-11-29 |
| Access Restriction | Open |
| Rights License | Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). © 2022 by the authors. |
| Subject Keyword | coherent feedback optomechanical squeezing of light optical and mechanical losses |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physics and Astronomy Information Systems Electrical and Electronic Engineering Mathematical Physics |
