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arXiv · 1109.2666

Information and fidelity in projective measurements

Hiroaki Terashima
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Abstract

In this study, we explicitly calculate information and fidelity of an r-rank projective measurement on a completely unknown state in a d-dimensional Hilbert space. We also show a tradeoff between information and fidelity at the level of a single outcome and discuss the efficiency of measurement with respect to fidelity.

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Hiroaki Terashima. 2012-01-07. Information and fidelity in projective measurements. https://doi.org/10.1103/physreva.85.022124

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