Quantum phases of a qutrit

Details Quantum phases of a qutrit Quantum phases of a qutrit

2003-12-15

arxiv.org/abs/quant-ph/0312127v1

J. Phys. A 37, 4097--4106 (2004)

Physics

Quantum Physics

6 pages

Scientific paper

10.1088/0305-4470/37/13/012

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.

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