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, and Christoph Weiss
Phys. Rev. Lett. 111, 100406 – Published 6 September 2013
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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.

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  • Received 4 January 2013

DOI:https://doi.org/10.1103/PhysRevLett.111.100406

© 2013 American Physical Society

Authors & Affiliations

Bettina Gertjerenken1, Thomas P. Billam2, Caroline L. Blackley3, C. Ruth Le Sueur3, Lev Khaykovich4, Simon L. Cornish5, and Christoph Weiss5,*

  • 1Institut für Physik, Carl von Ossietzky Universität, D-26111 Oldenburg, Germany
  • 2Department of Physics, Jack Dodd Center for Quantum Technology, University of Otago, Dunedin 9016, New Zealand
  • 3Department of Chemistry, Joint Quantum Centre (JQC) Durham-Newcastle, Durham University, Durham DH1 3LE, United Kingdom
  • 4Department of Physics, Bar-Ilan University, Ramat-Gan 52900, Israel
  • 5Department of Physics, Joint Quantum Centre (JQC) Durham-Newcastle, Durham University, Durham DH1 3LE, United Kingdom

  • *Christoph.Weiss@durham.ac.uk

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Issue

Vol. 111, Iss. 10 — 6 September 2013

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