Generating mesoscopic bell states via collisions of distinguishable quantum bright solitons

Bettina Gertjerenken; Thomas P. Billam; Caroline L. Blackley; C. Ruth Le Sueur; Lev Khaykovich; Simon L. Cornish; Christoph Weiss

doi:10.1103/PhysRevLett.111.100406

Generating mesoscopic bell states via collisions of distinguishable quantum bright solitons

Bettina Gertjerenken, Thomas P. Billam, Caroline L. Blackley, C. Ruth Le Sueur, Lev Khaykovich, Simon L. Cornish, Christoph Weiss

Department of Physics

Research output: Contribution to journal › Article › peer-review

46 Scopus citations

Abstract

We investigate numerically the collisions of two distinguishable quantum matter-wave bright solitons in a one-dimensional harmonic trap. We show that such collisions can be used to generate mesoscopic Bell states that can reliably be distinguished from statistical mixtures. Calculation of the relevant s-wave scattering lengths predicts that such states could potentially be realized in quantum-degenerate mixtures of Rb85 and Cs133. In addition to fully quantum simulations for two distinguishable two-particle solitons, we use a mean-field description supplemented by a stochastic treatment of quantum fluctuations in the soliton's center of mass: we demonstrate the validity of this approach by comparison to a mathematically rigorous effective potential treatment of the quantum many-particle problem.

Original language	English
Article number	100406
Journal	Physical Review Letters
Volume	111
Issue number	10
DOIs	https://doi.org/10.1103/PhysRevLett.111.100406
State	Published - 6 Sep 2013

Funding

Funders	Funder number
Engineering and Physical Sciences Research Council	EP/F002068/1

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10.1103/PhysRevLett.111.100406

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AU - Khaykovich, Lev

AU - Cornish, Simon L.

AU - Weiss, Christoph

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Generating mesoscopic bell states via collisions of distinguishable quantum bright solitons

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