تقرير
Producing superfluid circulation states using phase imprinting
العنوان: | Producing superfluid circulation states using phase imprinting |
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المؤلفون: | Kumar, Avinash, Dubessy, Romain, Badr, Thomas, De Rossi, Camilla, de Herve, Mathieu De Goër, Longchambon, Laurent, Perrin, Hélène |
المصدر: | Phys. Rev. A 97, 043615 (2018) |
سنة النشر: | 2018 |
المجموعة: | Condensed Matter Physics (Other) Quantum Physics |
مصطلحات موضوعية: | Condensed Matter - Quantum Gases, Physics - Atomic Physics, Quantum Physics |
الوصف: | We propose a method to prepare states of given quantized circulation in annular Bose-Einstein condensates (BEC) confined in a ring trap using the method of phase imprinting without relying on a two-photon angular momentum transfer. The desired phase profile is imprinted on the atomic wave function using a short light pulse with a tailored intensity pattern generated with a Spatial Light Modulator. We demonstrate the realization of 'helicoidal' intensity profiles suitable for this purpose. Due to the diffraction limit, the theoretical steplike intensity profile is not achievable in practice. We investigate the effect of imprinting an intensity profile smoothed by a finite optical resolution onto the annular BEC with a numerical simulation of the time-dependent Gross-Pitaevskii equation. This allows us to optimize the intensity pattern for a given target circulation to compensate for the limited resolution. |
نوع الوثيقة: | Working Paper |
DOI: | 10.1103/PhysRevA.97.043615 |
URL الوصول: | http://arxiv.org/abs/1801.04792 |
رقم الأكسشن: | edsarx.1801.04792 |
قاعدة البيانات: | arXiv |
DOI: | 10.1103/PhysRevA.97.043615 |
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