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Simulating single-shot images of ultracold atoms

Date: Tuesday, October 23, 2018 11:00 - 12:30
Speaker: Axel Lode
Location: Big Seminar room Ground floor / Office Bldg West (I21.EG.101)
Series: Physical Sciences Seminar
Host: Misha Lemeshko
Lab building west seminar room

Abstract:

Ultracold atoms are usually imaged in experiments in single-shot images.These images are a projective measurement of the many-body wavefunction.Such single-shot images thus correspond to drawing a random sample fromthe probability distribution associated with the wavefunction. This talkwill discuss single-shot simulations performed with the MCTDH-X software[0], their effect on the interpretation of computations with MCTDH-X andexperimental observations, and give some prospects on how to betterextract and understand their information content. MCTDH-X-basedsingle-shot simulations recently helped to characterize theexperimentally observed granulation of a Bose-Einstein condensate (BEC)[1] and to identify the fragmentation of a BEC in a cavity [2] as wellas a measurement protocol for the crystal state of ultracold dipolarbosons [3].[0] MCTDH-X: The multiconfigurational time-dependent Hartree forindistinguishable particles software, A. U. J. Lode, M. C. Tsatsos, E.Fasshauer, R. Lin, L. Papariello, P. Molignini, and C. Lvque,http://ultracold.org (2018).[1] A. U. J. Lode, G. D. Telles, D. Luo, V. S. Bagnato, and R. G. Hulet,https://arxiv.org/abs/1707.04055, arXiv:1707.04055 [cond-mat.quant-gas](2017).[2] A. U. J. Lode and Christoph Bruder, DOI:https://doi.org/10.1103/PhysRevLett.118.013603, Phys. Rev. Lett. 118,013603 (2017).[3] B. Chatterjee and A. U. J. Lode, https://arxiv.org/abs/1708.07409,arXiv:1708.07409 [cond-mat.quant-gas] (2017), accepted in Phys. Rev. A(2018).
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