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arXiv · 1502.04881

Robustness of incompatibility for quantum devices

Erkka Haapasalo
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Abstract

A robustness measure for incompatibility of quantum devices in the lines of the robustness of entanglement is proposed. The concept of general robustness measures is first introduced in general convex-geometric settings and these ideas are then applied to measure how incompatible a given pair of quantum devices is. The robustness of quantum incompatibility is calculated in three special cases: a pair of Fourier-coupled rank-1 sharp observables, a pair of decodable channels, where decodability means left-invertibility by a channel, and a pair consisting of a rank-1 sharp observable and a decodable channel.

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Erkka Haapasalo. 2015-02-17. Robustness of incompatibility for quantum devices. https://doi.org/10.1088/1751-8113/48/25/255303

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