Representation of quantum states as points in a probability simplex associated to a SIC-POVM

Details Representation of quantum states as points in a probability simplex associated to a SIC-POVM Representation of quantum states as points in a probability simplex associated to a SIC-POVM

2010-07-05

arxiv.org/abs/1007.0715v3

Foundations of Physics, 41 (2011), pp. 1200-1213

Physics

Quantum Physics

12 pages. Added journal reference

Scientific paper

10.1007/s10701-011-9540-9

The quantum state of a $d$-dimensional system can be represented by the $d^2$ probabilities corresponding to a SIC-POVM, and then this distribution of probability can be represented by a vector of $\R^{d^2-1}$ in a simplex, we will call this set of vectors $\mathcal{Q}$. Other way of represent a $d$-dimensional system is by the corresponding Bloch vector also in $\R^{d^2-1}$, we will call this set of vectors $\mathcal{B}$. In this paper it is proved that with the adequate scaling $\mathcal{B}=\mathcal{Q}$. Also we indicate some features of the shape of $\mathcal{Q}$.

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