Measurement-enhanced determination of BEC phase transitions
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. We furthermore calibrate in-situ images from dispersive probing of a BEC with corresponding absorption images in time-of-flight. This allows for the determination of the transition point in a single experimental realization by applying multiple dispersive measurements. Finally, we explore the continuous probing of several consecutive phase transition crossings using the periodic addition of a focused "dimple" potential.
Keywords
Cite
@article{arxiv.1607.02934,
title = {Measurement-enhanced determination of BEC phase transitions},
author = {Mark G. Bason and Robert Heck and Mario Napolitano and Ottó Elíasson and Romain Müller and Aske Thorsen and Wen-Zhuo Zhang and Jan Arlt and Jacob F. Sherson},
journal= {arXiv preprint arXiv:1607.02934},
year = {2018}
}
Comments
9 pages, 7 figures; M. G. Bason and R. Heck contributed equally to this work