Measurement compatibility in multiparameter quantum interferometry
Fuente:
arXiv
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866908761984073728 |
|---|---|
| author | Jayakumar, Jayanth Barbieri, Marco Stobińska, Magdalena |
| author_facet | Jayakumar, Jayanth Barbieri, Marco Stobińska, Magdalena |
| contents | The Cramér-Rao bound captures completely the performance of single-parameter quantum sensors. On the other hand, its extension to multiple parameters demands more caution. Different aspects need to be captured at once, including, critically, compatibility. In this article we consider compatibility in quantum interferometry for an important class of probe states, measured by double homodyne or photon counters, standard benchmarks for these applications. We include the presence of loss and phase diffusion in the estimation of a phase. Our results illustrate how different weighting of the precision on individual parameters affects their compatibility, adding to the list of considerations for quantum multiparameter estimation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_18324 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Measurement compatibility in multiparameter quantum interferometry Jayakumar, Jayanth Barbieri, Marco Stobińska, Magdalena Quantum Physics The Cramér-Rao bound captures completely the performance of single-parameter quantum sensors. On the other hand, its extension to multiple parameters demands more caution. Different aspects need to be captured at once, including, critically, compatibility. In this article we consider compatibility in quantum interferometry for an important class of probe states, measured by double homodyne or photon counters, standard benchmarks for these applications. We include the presence of loss and phase diffusion in the estimation of a phase. Our results illustrate how different weighting of the precision on individual parameters affects their compatibility, adding to the list of considerations for quantum multiparameter estimation. |
| title | Measurement compatibility in multiparameter quantum interferometry |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2504.18324 |