Measurement-enhanced determination of BEC phase transitions
| Autor: | Bason, Mark G., Heck, Robert, Napolitano, Mario, Elíasson, Ottó, Müller, Romain, Thorsen, Aske, Zhang, Wen-Zhuo, Arlt, Jan, Sherson, Jacob F. |
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| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | J. Phys. B 51, 175301 (2018) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1088/1361-6455/aad447 |
| Popis: | 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. Comment: 9 pages, 7 figures; M. G. Bason and R. Heck contributed equally to this work |
| Databáze: | arXiv |
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