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Updated: Sep 18, 2025

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Published on: December 4, 2017
Experimental Realization of an Analog of Entanglement between Two Brownian Particles
Theerthagiri L1,2, S Ciliberto3
1University of Camerino, Physics Division, School of Science and Technology, I-62032 Camerino (MC), Italy.
None:
We experimentally investigate the statistical properties of a classical analog of quantum entanglement between two Brownian particles connected by an elastic force and maintained at different temperatures through separate heat reservoirs. Uncertainty relations between coordinates and coarse-grained velocity can produce a phenomenon similar to quantum entanglement, where temperature plays the role of Planck's constant. The theoretical analysis matches the experimental results, confirming that the interconnected particles exhibit Brownian quantum-inspired classical correlation entanglement. This effect arises from a coarse-grained description of Brownian motion and vanishes at a finer resolution. The coarsening scale range is measured too.
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