Experimental quantum tomography of a homodyne detector
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arXiv
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| Main Authors: | , , , |
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| Format: | Preprint |
| Published: |
2015
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| Subjects: | |
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| _version_ | 1866916124035121152 |
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| author | Grandi, Samuele Zavatta, Alessandro Bellini, Marco Paris, Matteo G. A. |
| author_facet | Grandi, Samuele Zavatta, Alessandro Bellini, Marco Paris, Matteo G. A. |
| contents | We suggest and demonstrate a tomographic method to fully characterize homodyne detectors at the quantum level. The operator measure associated with the detector is expanded in the quadrature basis and probed with a set of coherent states. The coefficients of the expansion are retrieved using a least squares algorithm. We then validate the reconstructed operator measure on nonclassical states. Finally, we exploit results to estimate the overall quantum efficiency of the detector. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_1505_03297 |
| institution | arXiv |
| publishDate | 2015 |
| record_format | arxiv |
| spellingShingle | Experimental quantum tomography of a homodyne detector Grandi, Samuele Zavatta, Alessandro Bellini, Marco Paris, Matteo G. A. Quantum Physics We suggest and demonstrate a tomographic method to fully characterize homodyne detectors at the quantum level. The operator measure associated with the detector is expanded in the quadrature basis and probed with a set of coherent states. The coefficients of the expansion are retrieved using a least squares algorithm. We then validate the reconstructed operator measure on nonclassical states. Finally, we exploit results to estimate the overall quantum efficiency of the detector. |
| title | Experimental quantum tomography of a homodyne detector |
| topic | Quantum Physics |
| url | https://arxiv.org/abs/1505.03297 |