Uncertainty relations for general phase spaces

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Werner, R.F.: Uncertainty relations for general phase spaces. In: Frontiers of Physics 11 (2016), Nr. 3, 110305. DOI: https://doi.org/10.1007/s11467-016-0558-5

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Abstract: 
We describe a setup for obtaining uncertainty relations for arbitrary pairs of observables related by a Fourier transform. The physical examples discussed here are the standard position and momentum, number and angle, finite qudit systems, and strings of qubits for quantum information applications. The uncertainty relations allow for an arbitrary choice of metric for the outcome distance, and the choice of an exponent distinguishing, e.g., absolute and root mean square deviations. The emphasis of this article is on developing a unified treatment, in which one observable takes on values in an arbitrary locally compact Abelian group and the other in the dual group. In all cases, the phase space symmetry implies the equality of measurement and preparation uncertainty bounds. There is also a straightforward method for determining the optimal bounds.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2016
Appears in Collections:Fakultät für Mathematik und Physik

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1 image of flag of Germany Germany 5 55.56%
2 image of flag of United States United States 2 22.22%
3 image of flag of Czech Republic Czech Republic 1 11.11%
4 image of flag of China China 1 11.11%

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