Related papers: Quantum-classical gravity distinction in reservoir-engineered massive quantum system

Quantum-classical gravity distinction in reservoir-engineered massive quantum system

URL: http://arxiv.org/abs/2511.08869v2
Date: Mon, 17 Nov 2025 12:20:00 GMT
Title: Quantum-classical gravity distinction in reservoir-engineered massive quantum system
Authors: Ziqian Tang, Zizhao Han, Zikuan Kan, Chen Yang, Zeji Li, Yining Jiang, Yulong Liu,
Abstract summary: classical gravity introduces additional dissipative channels, which in turn give rise to distinct entanglement characteristics.<n>Our scheme relaxes the experimental requirements for verifying quantum gravity, thereby paving a new path toward its near-term realization.
Score: 4.016104283250127
License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
Abstract: Massive quantum systems have emerged as compelling tabletop interface-systems for testing the quantum nature of gravity. However, conventional schemes that focus on directly using gravity to induce entanglement suffer from overwhelming environmental decoherence: maintaining entanglement between two oscillators requires an impractically high mechanical quality factor. In this work, we put forward an alternative reservoir-engineered scheme, whose core function is to quantify how gravity modifies (rather than prepares) the steady-state entanglement. Compared to quantum gravity, classical gravity introduces additional dissipative channels, which in turn give rise to distinct entanglement characteristics and thus enable the discrimination between the two types of gravity. Notably, this entanglement difference can still be maintained even when the mechanical quality factor is far below the threshold required by conventional schemes. Moreover, it demonstrates significant robustness against non-gravitational couplings, specifically, those like Casimir and Coulomb forces that are inherent in experimental setups. Our scheme relaxes the experimental requirements for verifying quantum gravity, thereby paving a new path toward its near-term realization.

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