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Hilbert space-valued Gaussian processes, and quantum states
Journal article   Open access   Peer reviewed

Hilbert space-valued Gaussian processes, and quantum states

Palle E. T. Jorgensen and James Tian
Journal of mathematical physics, Vol.66(5), 053503
05/2025
DOI: 10.1063/5.0229971
url
https://doi.org/10.1063/5.0229971View
Published (Version of record) Open Access

Abstract

We offer new results and new directions in the study of operator-valued kernels and their factorizations. Our approach provides both more explicit realizations and new results, as well as new applications. These include: (i) an explicit covariance analysis for Hilbert space-valued Gaussian processes, (ii) optimization results for quantum gates (from quantum information), (iii) new results for positive operator-valued measures, and (iv) a new approach/result in inverse problems for quantum measurements.

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