Average fidelity between random quantum states

DOI10.1103/PHYSREVA.71.032313zbMATH Open1227.81063arXivquant-ph/0311117OpenAlexW1982067110WikidataQ112267116 ScholiaQ112267116MaRDI QIDQ3102439

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Publication date: 4 December 2011

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Abstract: We analyze mean fidelity between random density matrices of size N, generated with respect to various probability measures in the space of mixed quantum states: Hilbert-Schmidt measure, Bures (statistical) measure, the measures induced by partial trace and the natural measure on the space of pure states. In certain cases explicit probability distributions for fidelity are derived. Results obtained may be used to gauge the quality of quantum information processing schemes.

Full work available at URL: https://arxiv.org/abs/quant-ph/0311117

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