Creation and Detection of a Mesoscopic Gas in a Nonlocal Quantum Superposition

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Author(s): Christoph Weiss, Yvan Castin
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Article: Phys. Rev. Lett. 102, 010403 (2009), APS
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PACS: 03.75.Gg, 03.75.Lm, 34.50.-s
Abstract:: 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 quantum superposition 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 detail the experimental feasibility.
URL: http://link.aps.org/doi/10.1103/PhysRevLett.102.010403 (text/plain)