Equal-fidelity surface for a qubit state via equal-distance extended Bloch vectors and derivatives

Sang Min Lee; Heonoh Kim; Han Seb Moon

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arXiv · 1410.1296

Equal-fidelity surface for a qubit state via equal-distance extended Bloch vectors and derivatives

Sang Min Lee·Heonoh Kim·Han Seb Moon

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Abstract

We describe and characterize an equal-fidelity surface in Bloch space targeted for a qubit state by means of equal-distance concept. The distance is generalized and defined as the Euclidean distance between extended Bloch vectors for arbitrary dimensional states. The distance is a genuine distance according to the definition and is related to other distances between quantum states and super-fidelity.

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Sang Min Lee, Heonoh Kim, Han Seb Moon. 2015-11-26. Equal-fidelity surface for a qubit state via equal-distance extended Bloch vectors and derivatives. https://arxiv.org/abs/1410.1296

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