Quantum metrology using quantum combs and tensor network formalism
Fuente:
arXiv
Guardado en:
| Autores principales: | , , , , |
|---|---|
| Formato: | Preprint |
| Publicado: |
2024
|
| Materias: | |
| Acceso en línea: | |
| Etiquetas: |
Agregar Etiqueta
Sin Etiquetas, Sea el primero en etiquetar este registro!
|
| _version_ | 1866916656321658880 |
|---|---|
| author | Kurdzialek, Stanislaw Dulian, Piotr Majsak, Joanna Chakraborty, Sagnik Demkowicz-Dobrzanski, Rafal |
| author_facet | Kurdzialek, Stanislaw Dulian, Piotr Majsak, Joanna Chakraborty, Sagnik Demkowicz-Dobrzanski, Rafal |
| contents | We develop an efficient algorithm for determining optimal adaptive quantum estimation protocols with arbitrary quantum control operations between subsequent uses of a probed channel. We introduce a tensor network representation of an estimation strategy, which drastically reduces the time and memory consumption of the algorithm, and allows us to analyze metrological protocols involving up to $N=50$ qubit channel uses, whereas the state-of-the-art approaches are limited to $N<5$. The method is applied to study the performance of the optimal adaptive metrological protocols in presence of various noise types, including correlated noise. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_04854 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Quantum metrology using quantum combs and tensor network formalism Kurdzialek, Stanislaw Dulian, Piotr Majsak, Joanna Chakraborty, Sagnik Demkowicz-Dobrzanski, Rafal Quantum Physics We develop an efficient algorithm for determining optimal adaptive quantum estimation protocols with arbitrary quantum control operations between subsequent uses of a probed channel. We introduce a tensor network representation of an estimation strategy, which drastically reduces the time and memory consumption of the algorithm, and allows us to analyze metrological protocols involving up to $N=50$ qubit channel uses, whereas the state-of-the-art approaches are limited to $N<5$. The method is applied to study the performance of the optimal adaptive metrological protocols in presence of various noise types, including correlated noise. |
| title | Quantum metrology using quantum combs and tensor network formalism |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/2403.04854 |