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Conferences > CLEO_QELS > 2014 > FTh4A > FTh4A.4

Quantum-Enhanced Precision in Unitary Process Tomography

Rebecca Whittaker, Xiao-Qi Zhou, Hugo Cable, Peter Shadbolt, Jeremy L. O’Brien, and Jonathan C. F. Matthews

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Abstract

A novel scheme for unitary quantum process tomography (QPT) is theoretically presented and implemented experimentally. Multi-photon input states are used to obtain quantum-enhanced precision for the unitary estimation. Our results are compared to standard QPT.

© 2014 Optical Society of America

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