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arXiv · 2211.11668

Phase Retrieval of Vortices in Bose-Einstein Condensates

Ron Ziv·Anatoly Patsyk·Yaakov Lumer·Yoav Sagi·Yonina C. Eldar·Mordechai Segev
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Abstract

We propose and demonstrate numerically a measurement scheme for complete reconstruction of the 2D quantum wave function of a Bose-Einstein condensate, amplitude and phase, from a time-of-flight measurement. We identify a fundamental ambiguity present in the measurement of phase structures of high-symmetry excitations (e.g., vortices) and show how to overcome it by allowing for different expansion durations in different directions. We demonstrate this approach with the reconstruction of matter-wave vortices and arrays of vortices.

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Ron Ziv, Anatoly Patsyk, Yaakov Lumer, Yoav Sagi, Yonina C. Eldar, Mordechai Segev. 2022-11-21. Phase Retrieval of Vortices in Bose-Einstein Condensates. https://doi.org/10.1103/physreva.109.043318

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