Quantum phases of a qutrit
2004 (English)In: Journal of Physics A: Mathematical and General, ISSN 0305-4470, Vol. 37, no 13, 4097-4106 p.Article in journal (Refereed) Published
We consider various approaches to treat the phases of a qutrit. Although it is possible to represent qutrits in a convenient geometrical manner by resorting to a generalization of the Poincare sphere, we argue that the appropriate way of dealing with this problem is through phase operators associated with the algebra su(3). The rather unusual properties of these phases are caused by the small dimension of the system and are explored in detail. We also examine the positive operator-valued measures that can describe the qutrit phase properties.
Place, publisher, year, edition, pages
2004. Vol. 37, no 13, 4097-4106 p.
relative phase, mixed states, observables, computation, difference, operators
IdentifiersURN: urn:nbn:se:kth:diva-23336DOI: 10.1088/0305-4470/37/13/012ISI: 000220855000013ScopusID: 2-s2.0-1842817588OAI: oai:DiVA.org:kth-23336DiVA: diva2:342034
QC 201005252010-08-102010-08-102011-10-31Bibliographically approved