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Measurement-enhanced determination of BEC phase transitions

journal contribution
posted on 2023-06-09, 14:29 authored by Mark Bason, Robert Heck, Mario Napolitano, Ottó Elíasson, Romain Müller, Aske Thorsen, Wen-Zhuo Zhang, Jan J Arlt, Jacob F Sherson
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 timeof- 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.

Funding

The Danish Council for Independent Research

The European Research Council

The Lundbeck Foundation

Marie Curie IEF

The Villum Foundation

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of Physics B: Atomic, Molecular and Optical Physics

ISSN

0953-4075

Publisher

IOP Publishing

Issue

17

Volume

51

Page range

175301 1 -9

Department affiliated with

  • Physics and Astronomy Publications

Research groups affiliated with

  • Atomic, Molecular and Optical Physics Research Group Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2018-08-13

First Open Access (FOA) Date

2018-08-13

First Compliant Deposit (FCD) Date

2018-08-09

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