Homodyne Detection of Temporally Resolved Quantum States
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2026
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| _version_ | 1866908835272196096 |
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| author | Sandner, Owen Mackey, Brendan Liu, Yuyang Kupchak, Connor MacRae, Andrew |
| author_facet | Sandner, Owen Mackey, Brendan Liu, Yuyang Kupchak, Connor MacRae, Andrew |
| contents | 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. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2602_13946 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Homodyne Detection of Temporally Resolved Quantum States Sandner, Owen Mackey, Brendan Liu, Yuyang Kupchak, Connor MacRae, Andrew Quantum Physics 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. |
| title | Homodyne Detection of Temporally Resolved Quantum States |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2602.13946 |