Entanglement Effect on Off-diagonal Geometric Phase

Details Entanglement Effect on Off-diagonal Geometric Phase Entanglement Effect on Off-diagonal Geometric Phase

2005-06-29

arxiv.org/abs/quant-ph/0506247v2

Physics

Quantum Physics

final version; appearing in Europhys. Lett. 74, 757(2006)

Scientific paper

10.1209/epl/i2005-10587-x

The effect of entanglement on off-diagonal geometric phases is investigated in the paper. Two spin-1/2 particles in magnetic fields along the $y$ direction are taken as an example. Three parameters (the purity of state $r$, the mixing angle $\theta$ and the relative phase $\beta$) 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.

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