Abstract
We demonstrate through an exactly solvable model that collective coupling to any thermal bath induces effectively nonlinear couplings in a quantum many-body (multispin) 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.
- Received 24 May 2010
DOI:https://doi.org/10.1103/PhysRevLett.106.010404
© 2011 The American Physical Society