Probing gravitational interaction between milligram optomechanical oscillators operating in the quantum regime

• URL: http://arxiv.org/abs/2607.18351v1
• Date: Mon, 20 Jul 2026 09:06:22 GMT
• Title: Probing gravitational interaction between milligram optomechanical oscillators operating in the quantum regime
• Abstract summary: We present an ongoing optomechanical experiment aimed at detecting gravitational interaction between milligram-scale oscillators.<n>The setup employs two microfabricated oscillators coupled via gravity and read out through a high-finesse optical cavity, at ultra-cryogenic temperature.<n>The experiment establishes a realistic platform for probing gravitational effects in systems approaching the quantum regime.
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• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We present an ongoing optomechanical experiment aimed at detecting gravitational interaction between milligram-scale oscillators, and exploring its interplay with quantum mechanics. The setup employs two microfabricated oscillators coupled via gravity and read out through a high-finesse optical cavity, at ultra-cryogenic temperature. Finite element simulations, noise modelling, and sensitivity estimates demonstrate that gravitational coupling can be detected with integration times ranging from minutes to hours. The experiment establishes a realistic platform for probing gravitational effects in systems approaching the quantum regime.

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