Homodyne Detection of Temporally Resolved Quantum States
Quantum Physics
2026-02-17 v1
Abstract
We present an analysis of the time domain measurement of temporally resolvable quantum states using balanced homodyne detection. Our approach outlines a formalism of detecting quantum states in arbitrary temporal modes via projection of the temporal mode onto a natural detector basis. We then present an algorithm for simulating the resultant photocurrent of continuous homodyne detection in the presence of a temporally resolved mode, and use this algorithm to explore the effects of realistic measurement errors on marginal reconstruction and quantum state tomography. A complete implementation of the method is provided through open source code on a GitHub repository.
Keywords
Cite
@article{arxiv.2602.13946,
title = {Homodyne Detection of Temporally Resolved Quantum States},
author = {Owen Sandner and Brendan Mackey and Yuyang Liu and Connor Kupchak and Andrew MacRae},
journal= {arXiv preprint arXiv:2602.13946},
year = {2026}
}
Comments
17 pages, 5 figures