Journal
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
Volume 51, Issue 17, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1361-6455/aad447
Keywords
Bose-Einstein condensates; Faraday effect; phase transitions; quantum simulation; ultracold quantum gases; phase diagrams; dispersive probing
Categories
Funding
- Danish Council for Independent Research
- Lundbeck Foundation
- Villum Foundation
- European Research Council
- Marie Curie IEF
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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.
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