Generation of macroscopic quantum-superposition states by linear coupling to a bath
arXiv:1012.4594 · doi: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.
4 pages, 2 figures, Physical Review Letters (in press)
References in corpus (7)
- Quantum States and Phases in Driven Open Quantum Systems with Cold Atoms
- Quantum computing with an electron spin ensemble
- Nonlinear spectroscopy of photons bound to one atom
- Scaling laws for the decay of multiqubit entanglement
- Thermodynamical Control by Frequent Quantum Measurements
- Dynamical evolution of correlated spontaneous emission of a single photon from a uniformly excited cloud of N atoms
- Local observation of antibunching in a trapped Fermi gas