Creation and detection of a mesoscopic gas in a non-local quantum superposition

Details Creation and detection of a mesoscopic gas in a non-local quantum superposition Creation and detection of a mesoscopic gas in a non-local quantum superposition

2008-06-20

arxiv.org/abs/0806.3395v1

Physical Review Letters 101 (2009) 010403

Physics

Condensed Matter

Other Condensed Matter

4 pages, 1 figure

Scientific paper

10.1103/PhysRevLett.102.010403

We investigate the scattering of a quantum matter wave soliton on a barrier in a one dimensional geometry and we show that it can lead to mesoscopic Schr\"odinger cat states, where the atomic gas is in a coherent superposition of being in the half-space to the left of the barrier and being in the half-space to the right of the barrier. We propose an interferometric method to reveal the coherent nature of this superposition and we discuss in details the experimental feasibility.

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