Self-guided quantum tomography

Publication Type:
Journal Article
Citation:
Physical Review Letters, 2014, 113 (19)
Issue Date:
2014-11-07
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© 2014 American Physical Society. We introduce a self-learning tomographic technique in which the experiment guides itself to an estimate of its own state. Self-guided quantum tomography uses measurements to directly test hypotheses in an iterative algorithm which converges to the true state. We demonstrate through simulation on many qubits that Self-guided quantum tomography is a more efficient and robust alternative to the usual paradigm of taking a large amount of informationally complete data and solving the inverse problem of postprocessed state estimation.
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