Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Log inSign up
Challenges
Datasets
Workspaces
Papers
Discussions
Leaderboard
Blog
Job Board
Q3AS

© 2026 Aqora Quantum S.A.S.

TermsPrivacyLegal Notice

Optik

Enhancing multipartite entanglement in an OPA-assisted rhombus optomechanical ring cavity via Coulomb coupling

Yassine Oussarhan, Fouad Essaadi, Haddou El Ghani, S. Mouslih, M. Jakha, S. Taj, B. Manaut

Published Aug 22, 2026• 0 citations
Publisher
DOI
10.1016/j.ijleo.2026.172875

Related papers

Enhanced mechanical entanglement in an optomechanical cavity with a Coulomb interaction

Xiaohai Hu, Bang‐Pin Hou, Bei Tang

Optik•Feb 2, 2018•3 citations

Bipartite Entanglement Generation in an Electro-Optomechanical Ring Cavity Via Parametric Amplification and Charge-Mediated Coupling

Fouad Essaadi, Abderrahman Abbassi, B. Manaut +1 more

•Jan 1, 2025•0 citations

Controllable optical bistability in an optomechanical ring cavity with an atomic ensemble and the Coulomb interaction

Yunjiu Cao, Guanglong Chen, Xinxin Zhao +1 more

Applied Physics B•Jun 28, 2024•5 citations

Emergence of multipartite optomechanical entanglement in microdisk cavities coupled to nanostring waveguide

Zhi‐Cheng Shi, Yan Xia, Jie Song

Quantum Information Processing•May 30, 2013•3 citations

Generation and Enhancement of Bipartite and Tripartite Entanglement in an Electro-Optomechanical Ring Cavity

Fouad Essaadi, Yassine Oussarhan, Mohamed Ouhammou +4 more

This study investigates the generation and enhancement of quantum entanglement in an electro-optomechanical ring cavity system. The setup integrates two Coulomb-coupled mechanical resonators, which serve as the fundamental mechanism for the generation of bipartite and tripartite entanglement via charge mediated coupling. We then demonstrate the significant enhancement of this entanglement via a nonlinear parametric drive (an optical parametric amplifier, OPA), which injects a controllable nonlinearity into the cavity. We derive the system's Hamiltonian and the corresponding quantum Langevin equations, which are linearized around steady-state solutions to analyze Gaussian quantum fluctuations. Employing the covariance matrix formalism, we quantify bipartite entanglement via logarithmic negativity and tripartite entanglement via the minimum residual contangle. Our results unequivocally show that while the Coulomb interaction is indispensable for creating entanglement, the OPA acts as a powerful control tool, dramatically amplifying the degree of quantum correlations for all subsystems. We find that the strength of entanglement is highly sensitive to several parameters and can be optimized through the strategic selection of the OPA's gain and phase, the laser detuning, and the input power. A key finding is the existence of a trade-off, where parameters that maximize entanglement also constrain the stable operating regime of the system. Furthermore, thermal noise is shown to progressively degrade all quantum correlations, underscoring the necessity for low-temperature operation. These findings provide comprehensive guidance for parameter optimization, outlining a clear path from generation to enhancement, and highlight the potential of such hybrid systems as versatile platforms for controlling multipartite entanglement in quantum technologies.

quant-pharXiv:2608.03578•Aug 5, 2026•0 citations

Dynamics of quantum entanglement between photon and phonon modes in Coulomb-coupled optomechanical cavity magnonic systems

Muhib Ullah, Muhammad Idrees, Said M. Mikki

Physical Review A•Jan 13, 2026•1 citation
This study investigates the generation and enhancement of quantum entanglement in an electro-optomechanical ring cavity system. The setup integrates two Coulomb-coupled mechanical resonators, which serve as the fundamental mechanism for the generation of bipartite and tripartite entanglement via charge mediated coupling. We then demonstrate the significant enhancement of this entanglement via a nonlinear parametric drive (an optical parametric amplifier, OPA), which injects a controllable nonlinearity into the cavity. We derive the system's Hamiltonian and the corresponding quantum Langevin equations, which are linearized around steady-state solutions to analyze Gaussian quantum fluctuations. Employing the covariance matrix formalism, we quantify bipartite entanglement via logarithmic negativity and tripartite entanglement via the minimum residual contangle. Our results unequivocally show that while the Coulomb interaction is indispensable for creating entanglement, the OPA acts as a powerful control tool, dramatically amplifying the degree of quantum correlations for all subsystems. We find that the strength of entanglement is highly sensitive to several parameters and can be optimized through the strategic selection of the OPA's gain and phase, the laser detuning, and the input power. A key finding is the existence of a trade-off, where parameters that maximize entanglement also constrain the stable operating regime of the system. Furthermore, thermal noise is shown to progressively degrade all quantum correlations, underscoring the necessity for low-temperature operation. These findings provide comprehensive guidance for parameter optimization, outlining a clear path from generation to enhancement, and highlight the potential of such hybrid systems as versatile platforms for controlling multipartite entanglement in quantum technologies.