Measurement-enhanced determination of BEC phase diagrams
| Autor: | Bason, Mark G., Heck, Robert, Napolitano, Mario, Elíasson, Ottó, Mueller, Romain, Thorsen, Aske, Zhang, Wenzhuo, Arlt, Jan, Sherson, Jacob F. |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: | |
| Zdroj: | Bason, M G, Heck, R, Napolitano, M, Elíasson, O, Mueller, R, Thorsen, A, Zhang, W, Arlt, J & Sherson, J F 2016, ' Measurement-enhanced determination of BEC phase diagrams ' arXiv preprint . |
| Popis: | We demonstrate how dispersive atom number measurements during evaporative cooling can be used for enhanced determination of the non-linear parameter dependence of the transition to a Bose-Einstein condensate (BEC). Our analysis demonstrates that conventional averaging of shot-to-shot fluctuations introduces systematic errors and reduces precision in comparison with our method. We furthermore compare 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. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|