Journal
PHYSICAL REVIEW LETTERS
Volume 107, Issue 25, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.107.253602
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Funding
- EU
- CNR
- FARI of Sapienza Universita di Roma
- Department of Information Engineering, University of Padova
- University of Padova
- CNPq
- FAPEMIG
- INCT
- ItalianBrazilian Contract CNR-CNPq
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We present the experimental realization of the optimal estimation protocol for a Pauli noisy channel. The method is based on the generation of 2-qubit Bell states and the introduction of quantum noise in a controlled way on one of the state subsystems. The efficiency of the optimal estimation, achieved by a Bell measurement, is shown to outperform quantum process tomography.
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