Diagnosis, prescription, and prognosis of a bell-state filter by quantum process tomography
We apply the techniques of quantum process tomography to characterize errors and decoherence in a prototypical two-photon operation, a singlet-state filter. The quantum process tomography results indicate a large asymmetry in the process and also the required operation to correct for this asymmetry....
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| Veröffentlicht in: | Physical review letters 2003-09, Vol.91 (12), p.120402-120402, Article 120402 |
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| Hauptverfasser: | , , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
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| Zusammenfassung: | We apply the techniques of quantum process tomography to characterize errors and decoherence in a prototypical two-photon operation, a singlet-state filter. The quantum process tomography results indicate a large asymmetry in the process and also the required operation to correct for this asymmetry. We quantify residual errors and decoherence of the filtering operation after this modification. |
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| ISSN: | 0031-9007 1079-7114 |
| DOI: | 10.1103/physrevlett.91.120402 |