Volume 74, Number 5, June 2006
|Page(s)||757 - 763|
|Published online||05 May 2006|
Effects of entanglement on off-diagonal geometric phases
Department of Physics, Dalian University of Technology - Dalian 116024, PRC
Accepted: 10 April 2006
The effect of entanglement on off-diagonal geometric phases is investigated in the paper. Two spin-() particles in magnetic fields along the y direction are taken as an example. Three parameters (the purity of state r, the mixing angle θ and the relative phase β) are chosen to characterize the initial states. The nodal points at which the usual geometric phases disappear are calculated and illustrated as a function of the three parameters.
PACS: 03.65.Vf – Phases: geometric; dynamic or topological / 03.65.Ud – Entanglement and quantum nonlocality (e.g. EPR paradox, Bell's inequalities, GHZ states, etc.)
© EDP Sciences, 2006
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