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Physics 2010
Generation of macroscopic quantum-superposition states by linear coupling to a bathDOI: 10.1103/PhysRevLett.106.010404 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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