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arXiv · 2605.07371

Breaking mechanical dark mode via the Coulomb interaction

Jian-Song Zhang·Yuan Chen·Guang-Ling Cheng·Ai-Xi Chen
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Abstract

We propose a method to break the dark mode of two degenerate mechanical resonators (MRs) in optomechanical systems via the Coulomb interaction. Two degenerate MRs can be cooled to their ground-state simultaneously beyond the resolved sideband regime using the Coulomb interaction and an optical parametric amplifier (OPA). We show that strong and robust mechanical squeezing beyond 3 dB can be generated using the OPA and mechanical parametric amplification (MPA) introduced by the Coulomb interaction. Our results manifests that robust bipartite and genuine tripartite entanglement can be produced in a degenerate optomechanical system.

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Jian-Song Zhang, Yuan Chen, Guang-Ling Cheng, Ai-Xi Chen. 2026-05-08. Breaking mechanical dark mode via the Coulomb interaction. https://doi.org/10.1364/ol.599244

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