Response of a classical mesoscopic oscillator to a two-level quantum system

2025/09/04 by Sobrero, Felipe, Abrahão, Luca, Guerreiro, Thiago +1
#FOS: Physical sciences #Quantum Physics (quant-ph) #Statistical Mechanics (cond-mat.stat-mech)

paper · doi:10.48550/arxiv.2509.04216

Abstract

We investigate the dynamics of a classical mechanical oscillator coupled to the simplest quantum system, a single qubit. The qubit's influence manifests as deterministic and stochastic forces, highly dependent on its initial quantum state, imprinting unique measurable quantum-induced signatures onto the oscillator's response. The present results suggest a pathway to quantum state reconstruction through classical noise spectroscopy, with potential applications to mesoscopic optomechanical experiments, quantum metrology, and tabletop tests of the quantum nature of gravity.

Citations

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