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arXiv · 1012.4594

Generation of macroscopic quantum-superposition states by linear coupling to a bath

D. D. Bhaktavatsala Rao·Nir Bar-Gill·Gershon Kurizki
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Abstract

We demonstrate through an exactly solvable model that collective coupling to any thermal bath induces effectively nonlinear couplings in a quantum many-body (multi-spin) system. The resulting evolution can drive an uncorrelated large-spin system with high probability into a macroscopic quantum-superposition state. We discuss possible experimental realizations.

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D. D. Bhaktavatsala Rao, Nir Bar-Gill, Gershon Kurizki. 2010-12-21. Generation of macroscopic quantum-superposition states by linear coupling to a bath. https://doi.org/10.1103/physrevlett.106.010404

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