Entangling two distinguishable quantum bright solitons via collisions

Billam, Thomas P.; Blackley, Caroline L.; Gertjerenken, Bettina; Cornish, Simon L.; Weiss, Christoph

Abstract

The generation of mesoscopic Bell states via collisions of distinguishable bright solitons has been suggested in Phys. Rev. Lett. 111, 100406 (2013). Here, we extend our former proposal to two hyperfine states of 85Rb instead of two different atomic species, thus simplifying possible experimental realisations. A calculation of the s-wave scattering lengths for the hyperfine states (f,mf) = (2, +2) and (3, +2) identifies parameter regimes suitable for the creation of Bell states with an advantageously broad Feshbach resonance. We show the generation of Bell states using the truncated Wigner method for the soliton's centre of mass and demonstrate the validity of this approach by a comparison to a mathematically rigorous effective potential treatment of the quantum many-particle problem.

Citation

Billam, T. P., Blackley, C. L., Gertjerenken, B., Cornish, S. L., & Weiss, C. (2014, April). Entangling two distinguishable quantum bright solitons via collisions. Presented at 22nd International Laser Physics Workshop (LPHYS'13), Prague, Czech Republic

• Presentation Conference Type: Conference Paper (published)
• Conference Name: 22nd International Laser Physics Workshop (LPHYS'13)
• Publication Date: Apr 9, 2014
• Deposit Date: Jul 23, 2014
• Publicly Available Date: Aug 4, 2014
• Volume: 497
• Series Title: Journal of Physics: Conference Series
• Series Number: 1
• Series ISSN: 1742-6588,1742-6596
• DOI: https://doi.org/10.1088/1742-6596/497/1/012033
• Public URL: https://durham-repository.worktribe.com/output/1154837
• Additional Information: 22nd Annual International Laser Physics Workshop (LPHYS), Acad Sci Czech Republ, Inst Phys, Prague, CZECH REPUBLIC, JUL 15-19, 2013