Complete Optimal Convex Approximations of Qubit States under Distance
arXiv:1806.05080 · doi:10.1007/s11128-018-1948-0
Abstract
We consider the optimal approximation of arbitrary qubit states with respect to an available states consisting the eigenstates of two of three Pauli matrices, the -distance of an arbitrary target state. Both the analytical formulae of the -distance and the corresponding complete optimal decompositions are obtained. The tradeoff relations for both the sum and the squared sum of the -distances have been analytically and numerically investigated.
arXiv comment8 pages, 5 figures
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- Comment on "Optimal convex approximations of quantum states"
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