View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by Sussex Research Online Journal of Physics B: Atomic, Molecular and Optical Physics PAPER Related content - Sub-atom shot noise Faraday imaging of Measurement-enhanced determination of BEC ultracold atom clouds M A Kristensen, M Gajdacz, P L Pedersen phase transitions et al. - Two-terminal transport measurements with cold atoms To cite this article: Mark G Bason et al 2018 J. Phys. B: At. Mol. Opt. Phys. 51 175301 Sebastian Krinner, Tilman Esslinger and Jean-Philippe Brantut - PhD Tutorial Axel Griesmaier View the article online for updates and enhancements. This content was downloaded from IP address 139.184.246.34 on 08/08/2018 at 12:10 Journal of Physics B: Atomic, Molecular and Optical Physics J. Phys. B: At. Mol. Opt. Phys. 51 (2018) 175301 (9pp) https://doi.org/10.1088/1361-6455/aad447 Measurement-enhanced determination of BEC phase transitions Mark G Bason1,3 , Robert Heck3 , Mario Napolitano, Ottó Elíasson , Romain Müller, Aske Thorsen, Wen-Zhuo Zhang2, Jan J Arlt and Jacob F Sherson Department of Physics and Astronomy, Aarhus University, DK-8000 Aarhus C, Denmark E-mail:
[email protected] Received 17 May 2018, revised 2 July 2018 Accepted for publication 18 July 2018 Published 6 August 2018 Abstract We demonstrate how dispersive atom number measurements during evaporative cooling can be used for enhanced determination of the parameter dependence of the transition to a Bose– Einstein condensate (BEC). In this way shot-to-shot fluctuations in initial conditions are detected and the information extracted per experimental realization is increased.