On geometric phases for quantum trajectories
2006 (English)In: Acta Physica Hungarica A: Heavy Ion Physics, ISSN 1219-7580, Vol. 26, 195-201 p.Article in journal (Refereed) Published
A sequence of completely positive maps can be decomposed into quantum trajectories. The geometric phase or holonomy of such a trajectory is delineated. For nonpure initial states, it is shown that well-defined holonomies can be assigned by using Uhlmann's concept of parallel transport along the individual trajectories. We put forward an experimental realization of the geometric phase for a quantum trajectory in interferometry. We argue that the average over the phase factors for all quantum trajectories that build up a given open system evolution, fails to reflect the geometry of the open system evolution itself.
Place, publisher, year, edition, pages
2006. Vol. 26, 195-201 p.
Geometric phase, open systems, quantum trajectories
Research subject Physics
IdentifiersURN: urn:nbn:se:uu:diva-19894DOI: 10.1556/APH.26.2006.1-2.23OAI: oai:DiVA.org:uu-19894DiVA: diva2:47666
FunderSwedish Research Council