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Quantum phases of a qutrit
KTH, Superseded Departments, Microelectronics and Information Technology, IMIT.ORCID iD: 0000-0002-2082-9583
2004 (English)In: Journal of Physics A: Mathematical and General, ISSN 0305-4470, E-ISSN 1361-6447, Vol. 37, no 13, 4097-4106 p.Article in journal (Refereed) Published
Abstract [en]

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.
Keyword [en]
relative phase, mixed states, observables, computation, difference, operators
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-23336DOI: 10.1088/0305-4470/37/13/012ISI: 000220855000013Scopus ID: 2-s2.0-1842817588OAI: oai:DiVA.org:kth-23336DiVA: diva2:342034
Note
QC 20100525Available from: 2010-08-10 Created: 2010-08-10 Last updated: 2017-12-12Bibliographically approved

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Björk, Gunnar

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