Entropic uncertainty relations and the stabilizer formalism

Details Entropic uncertainty relations and the stabilizer formalism Entropic uncertainty relations and the stabilizer formalism

2011-03-11

arxiv.org/abs/1103.2316v2

J. Math. Phys. 53, 012202 (2012)

Physics

Quantum Physics

9 pages, 2 figures; published version

Scientific paper

10.1063/1.3678200

Entropic uncertainty relations express the quantum mechanical uncertainty principle by quantifying uncertainty in terms of entropy. Central questions include the derivation of lower bounds on the total uncertainty for given observables, the characterization of observables that allow strong uncertainty relations, and the construction of such relations for the case of several observables. We demonstrate how the stabilizer formalism can be applied to these questions. We show that the Maassen-Uffink entropic uncertainty relation is tight for the measurement in any pair of stabilizer bases. We compare the relative strengths of variance-based and various entropic uncertainty relations for dichotomic anticommuting observables.

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