Creation of macroscopic quantum superposition states by a measurement

Details Creation of macroscopic quantum superposition states by a measurement Creation of macroscopic quantum superposition states by a measurement

2007-10-18

arxiv.org/abs/0710.3578v3

Europhys. Lett. 83 (2008) 60004

Physics

Quantum Physics

4 pages (revtex4), 2 figures

Scientific paper

10.1209/0295-5075/83/60004

We propose a novel protocol for the creation of macroscopic quantum superposition (MQS) states based on a measurement of a non-monotonous function of a quantum collective variable. The main advantage of this protocol is that it does not require switching on and off nonlinear interactions in the system. We predict this protocol to allow the creation of multiatom MQS by measuring the number of atoms coherently outcoupled from a two-component (spinor) Bose-Einstein condensate.

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