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Geometry of quantum evolution for mixed quantum states
Stockholm University, Faculty of Science, Department of Physics.
Stockholm University, Faculty of Science, Department of Physics.
2014 (English)In: Physica Scripta, ISSN 0031-8949, E-ISSN 1402-4896, Vol. T160, 014004- p.Article in journal (Refereed) Published
Abstract [en]

The geometric formulation of quantum mechanics is a very interesting field of research which has many applications in the emerging field of quantum computation and quantum information, such as schemes for optimal quantum computers. In this work we discuss a geometric formulation of mixed quantum states represented by density operators. Our formulation is based on principal fiber bundles and purifications of quantum states. In our construction, the Riemannian metric and symplectic form on the total space are induced from the real and imaginary parts of the Hilbert-Schmidt Hermitian inner product, and we define a mechanical connection in terms of a locked inertia tensor and moment map. We also discuss some applications of our geometric framework.

Place, publisher, year, edition, pages
2014. Vol. T160, 014004- p.
Keyword [en]
quantum dynamics, mixed quantum states, geometric quantum mechanics
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:su:diva-103972DOI: 10.1088/0031-8949/2014/T160/014004ISI: 000335224700005OAI: oai:DiVA.org:su-103972DiVA: diva2:721819
Funder
Swedish Research Council
Note

AuthorCount:2;

Available from: 2014-06-05 Created: 2014-05-27 Last updated: 2017-12-05Bibliographically approved

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