Diagnosis, Prescription, and Prognosis of a Bell-State Filter by Quantum Process Tomography
- 19 September 2003
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 91 (12) , 120402
- https://doi.org/10.1103/physrevlett.91.120402
Abstract
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.Keywords
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