On the general constraints in single qubit quantum process tomography
arXiv:1604.08113 · doi:10.1038/srep26004
Abstract
We briefly review single-qubit quantum process tomography for trace-preserving and nontrace-preserving processes, and derive explicit forms of the general constraints for fitting experimental data. These new forms provide additional insight into the structure of the process matrix. We illustrate their utility with several examples, including a discussion of qubit leakage error models and the intuition which can be gained from their process matrices.
arXiv comment7 pages, 1 figure; overlaps and improves upon the first part of our previous submission: arxiv:1502.01016; to appear in Scientific Reports
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