Isotropic Phase-Number Squeezing and Macroscopic Quantum Coherence
G. M. D'Ariano, M. Fortunato, P. Tombesi
Abstract
A new master equation performing isotropic phase-number squeezing is suggested. The phase properties of coherent superpositions are analyzed when the state evolves in presence of a bath with fluctuations squeezed in this isotropic way. We find that such a reservoir greatly improves persistence of coherence with respect to either a customary thermal bath, or to an anisotropically squeezed phase-sensitive bath.
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