Comment on "Geometric Phases for Mixed States in Interferometry"
Abstract
Description
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).
this paper has been supplanted by math-ph/0111041, "Mixed State Holonomies", considerable material having been added there
this paper has been supplanted by math-ph/0111041, "Mixed State Holonomies", considerable material having been added there