Year: 2026
Type: article
Abstract: ABSTRACT Quantum entanglement in molecular cavity optomechanical (COM) systems serves as a fundamental resource to explore quantum‐enhanced sensing, coherent molecular dynamics, and quantum information processing, which has been studied under Markovian approximation but not yet explored in non‐Markovian reservoirs. In this paper, we propose a scheme to manipulate quantum entanglement in molecular COM system coupled with a degenerate optical parametric amplifier (DOPA) under Markovian approximation. We reveal that both strength and phase of DOPA can be tuned to enhance optical‐vibration entanglement and suppress vibration‐vibration entanglement. The optical‐vibration entanglement can exist at room temperature, demonstrating strong robustness against thermal noise. Moreover, we extend results from Markovian to non‐Markovian regimes, which can further enhance both types of entanglement with DOPA fixed. In particular, we find that non‐Markovian effects can reverse influences of DOPA on vibration‐vibration entanglement from suppression to enhancement, leading to regeneration of entanglement. The scheme provides an effective way to control and enhance quantum entanglement in a molecular COM system through steering DOPA and non‐Markovian effects.
Source: Laser & Photonics Review
DOI: 10.1002/lpor.72025
Authors: Wenyao Hu, H. N. Liu, X. C. Zhang, Cheng Shang, Yan‐Hui Zhou, H. Z. Shen
Institutions: Northeast Normal University, Shangrao Normal University
Language: English
Subfield: Atomic and Molecular Physics, and Optics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Awards: G2318974292, G8315128151
OpenAlex ID: W7220748405
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