Off-diagonal quantum holonomy along density operators

Details Off-diagonal quantum holonomy along density operators Off-diagonal quantum holonomy along density operators

2004-03-29

arxiv.org/abs/quant-ph/0403204v2

Phys. Lett. A 342, 205 (2005)

Physics

Quantum Physics

13 pages, revised version with new example section

Scientific paper

10.1016/j.physleta.2005.05.043

Uhlmann's concept of quantum holonomy for paths of density operators is
generalised to the off-diagonal case providing insight into the geometry of
state space when the Uhlmann holonomy is undefined. Comparison with previous
off-diagonal geometric phase definitions is carried out and an example
comprising the transport of a Bell-state mixture is given.

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