Comment on "Geometric Phases for Mixed States in Interferometry"

Details Comment on "Geometric Phases for Mixed States in Interferometry" Comment on "Geometric Phases for Mixed States in Interferometry"

2001-11-08

arxiv.org/abs/math-ph/0111013v2

Physics

Mathematical Physics

this paper has been supplanted by math-ph/0111041, "Mixed State Holonomies", considerable material having been added there

Scientific paper

We find for the unitary evolution of spin-1/2 systems that the "purely mathematical mixed state holonomy of Uhlmann limitedly agrees, in the case of evolution over geodesic spherical triangles, with the holonomy "in the experimental context of quantum interferometry" recently proposed by Sjoqvist, Pati, Ekert, Anandan, Ericsson, Oi and Vedral (Phys. Rev. Lett. 85 [2000], 2845-2848).

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