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Cat in a cold niobium box

Authors
Journal
Optics Communications
0030-4018
Publisher
Elsevier
Publication Date
Volume
79
Issue
5
Identifiers
DOI: 10.1016/0030-4018(90)90073-3

Abstract

Abstract At very low temperatures, steady-state macroscopic superpositions can be generated in a micromaser pumped by a stream of polarized two-level atoms. We show that the onset of these superpositions can be interpreted in terms of a first-order phase transition. While conventional bistable systems involved an incoherent mixture of two state localized at the two minima of an effective potential, the present situation is characterized by a coherent superposition of two such states.

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