Some measurements in quantum mechanics disturb each other. This has puzzled physicists
since the formulation of the theory, but only in recent decades has the incompatibility of …

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 …

Given a set of local dynamics, are they compatible with a global dynamics? We
systematically formulate these questions as quantum channel marginal problems. These …

We introduce the notion of incompatibility witness for quantum channels, defined as an
affine functional that is non-negative on all pairs of compatible channels and strictly negative …

Various forms of optimality for quantum observables described as normalized positive-
operator-valued measures (POVMs) are studied in this paper. We give characterizations for …

A pair of quantum observables diagonal in the same “incoherent” basis can be measured
jointly, so some coherence is obviously required for measurement incompatibility. Here we …

arxiv:1308.3154v3 [quant-ph] 17 Dec 2013 Page 1 arxiv:1308.3154v3 [quant-ph] 17 Dec 2013
ON COEXISTENCE AND JOINT MEASURABILITY OF RANK-1 QUANTUM OBSERVABLES …

We present a barycentric decomposition for quantum instruments whose output space is
finite-dimensional and input space is separable. As a special case, we obtain a barycentric …

We address the problem of characterising the compatible tuples of measurements that admit
a unique joint measurement. We derive a uniqueness criterion based on the method of …

The quantum switch is a quantum process that creates a coherent control between different
unitary operations, which is often described as a quantum process which transforms a pair of …