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Group geometrical axioms for magic states of quantum computing

Group Theory 2019-11-11 v1 General Topology Quantum Physics

Abstract

Let HH be a non trivial subgroup of index dd of a free group GG and NN the normal closure of HH in GG. The coset organization in a subgroup HH of GG provides a group PP of permutation gates whose common eigenstates are either stabilizer states of the Pauli group or magic states for universal quantum computing. A subset of magic states consists of MIC states associated to minimal informationally complete measurements. It is shown that, in most cases, the existence of a MIC state entails that the two conditions (i) N=GN=G and (ii) no geometry (a triple of cosets cannot produce equal pairwise stabilizer subgroups), or that these conditions are both not satisfied. Our claim is verified by defining the low dimensional MIC states from subgroups of the fundamental group G=π1(M)G=\pi_1(M) of some manifolds encountered in our recent papers, e.g. the 33-manifolds attached to the trefoil knot and the figure-eight knot, and the 44-manifolds defined by 00-surgery of them. Exceptions to the aforementioned rule are classified in terms of geometric contextuality (which occurs when cosets on a line of the geometry do not all mutually commute).

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Cite

@article{arxiv.1906.06068,
  title  = {Group geometrical axioms for magic states of quantum computing},
  author = {Michel Planat and Raymond Aschheim and Marcelo M. Amaral and Klee Irwin},
  journal= {arXiv preprint arXiv:1906.06068},
  year   = {2019}
}

Comments

12 pages, 4 figures, 4 tables