Tomographic reconstruction of free-electron quantum states

Fuente: arXiv
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Main Authors: Jeng, Hao, Ropers, Claus
Format: Preprint
Published: 2025
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author Jeng, Hao
Ropers, Claus
author_facet Jeng, Hao
Ropers, Claus
contents We give several algorithms for reconstructing quantum states of swift electrons, using maximum likelihood estimation, Bayesian inversion, and deep learning. We apply these algorithms to data previously recorded for an attosecond electron pulse-train to retrieve the density matrix and to analyse its physical properties. Based on the reconstructed quantum state, we obtain pulse-durations of about 245as and predict a degree of coherence of 36 per cent for radiations and excitations produced by these electrons.
format Preprint
id arxiv_https___arxiv_org_abs_2508_17594
institution arXiv
publishDate 2025
record_format arxiv
spellingShingle Tomographic reconstruction of free-electron quantum states
Jeng, Hao
Ropers, Claus
Quantum Physics
We give several algorithms for reconstructing quantum states of swift electrons, using maximum likelihood estimation, Bayesian inversion, and deep learning. We apply these algorithms to data previously recorded for an attosecond electron pulse-train to retrieve the density matrix and to analyse its physical properties. Based on the reconstructed quantum state, we obtain pulse-durations of about 245as and predict a degree of coherence of 36 per cent for radiations and excitations produced by these electrons.
title Tomographic reconstruction of free-electron quantum states
topic Quantum Physics
url https://arxiv.org/abs/2508.17594