Recursive quantum detector tomography
Conventional tomographic techniques are becoming increasingly infeasible for reconstructing the operators of quantum devices of growing sophistication. We describe a novel tomographic procedure using coherent states, which begins by reconstructing the diagonals of the operator and then each successi...
| Main Authors: | , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
2012
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| _version_ | 1797052827895332864 |
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| author | Zhang, L Datta, A Coldenstrodt-Ronge, H Jin, X Eisert, J Plenio, M Walmsley, I |
| author_facet | Zhang, L Datta, A Coldenstrodt-Ronge, H Jin, X Eisert, J Plenio, M Walmsley, I |
| author_sort | Zhang, L |
| collection | OXFORD |
| description | Conventional tomographic techniques are becoming increasingly infeasible for reconstructing the operators of quantum devices of growing sophistication. We describe a novel tomographic procedure using coherent states, which begins by reconstructing the diagonals of the operator and then each successive off-diagonal in a recursive manner. Each recursion is considerably more efficient than reconstructing the operator in its entirety, and each successive recursion involves fewer parameters. We apply our technique to reconstruct the positive-operator-valued measure corresponding to a recently developed coherent optical detector with phase sensitivity and number resolution. We discuss the effect of various parameters on the reconstruction accuracy. The results show the efficiency of the method and its robustness to experimental noise. © IOP Publishing and Deutsche Physikalische Gesellschaft. |
| first_indexed | 2024-03-06T18:36:08Z |
| format | Journal article |
| id | oxford-uuid:0b4ccfdc-bd5b-44aa-b264-3670a867fcba |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T18:36:08Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:0b4ccfdc-bd5b-44aa-b264-3670a867fcba2022-03-26T09:28:42ZRecursive quantum detector tomographyJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:0b4ccfdc-bd5b-44aa-b264-3670a867fcbaEnglishSymplectic Elements at Oxford2012Zhang, LDatta, AColdenstrodt-Ronge, HJin, XEisert, JPlenio, MWalmsley, IConventional tomographic techniques are becoming increasingly infeasible for reconstructing the operators of quantum devices of growing sophistication. We describe a novel tomographic procedure using coherent states, which begins by reconstructing the diagonals of the operator and then each successive off-diagonal in a recursive manner. Each recursion is considerably more efficient than reconstructing the operator in its entirety, and each successive recursion involves fewer parameters. We apply our technique to reconstruct the positive-operator-valued measure corresponding to a recently developed coherent optical detector with phase sensitivity and number resolution. We discuss the effect of various parameters on the reconstruction accuracy. The results show the efficiency of the method and its robustness to experimental noise. © IOP Publishing and Deutsche Physikalische Gesellschaft. |
| spellingShingle | Zhang, L Datta, A Coldenstrodt-Ronge, H Jin, X Eisert, J Plenio, M Walmsley, I Recursive quantum detector tomography |
| title | Recursive quantum detector tomography |
| title_full | Recursive quantum detector tomography |
| title_fullStr | Recursive quantum detector tomography |
| title_full_unstemmed | Recursive quantum detector tomography |
| title_short | Recursive quantum detector tomography |
| title_sort | recursive quantum detector tomography |
| work_keys_str_mv | AT zhangl recursivequantumdetectortomography AT dattaa recursivequantumdetectortomography AT coldenstrodtrongeh recursivequantumdetectortomography AT jinx recursivequantumdetectortomography AT eisertj recursivequantumdetectortomography AT pleniom recursivequantumdetectortomography AT walmsleyi recursivequantumdetectortomography |