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Quantum Readout Measurement Hardware

Homodyne Detection of Temporally Resolved Quantum States

arXiv
Authors: Owen Sandner, Brendan Mackey, Yuyang Liu, Connor Kupchak, Andrew MacRae

Year

2026

Paper ID

2635

Status

Preprint

Abstract Read

~2 min

Abstract Words

99

Citations

N/A

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.

Why This Paper Matters

  • This paper contributes to the Quantum Readout & Measurement Hardware research area in the Quantum Articles archive.
  • It adds a 2026 reference point for readers tracking recent quantum research.
  • We present an analysis of the time domain measurement of temporally resolvable quantum states using balanced homodyne detection.

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References & Citation Signals

[1] DOI https://doi.org/arXiv:2602.13946 [2] arXiv https://arxiv.org/abs/2602.13946 [3] Publisher https://arxiv.org/abs/2602.13946

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