Testing precision and accuracy of weak value measurements in an IBM quantum system

Author:

Ruelas Paredes David R. A.1ORCID,Uria Mariano1ORCID,Massoni Eduardo1ORCID,De Zela Francisco1ORCID

Affiliation:

1. Departamento de Ciencias, Sección Física, Pontificia Universidad Católica del Perú , Lima 15088, Peru

Abstract

Historically, weak values have been associated with weak measurements performed on quantum systems. Over the past two decades, a series of works have shown that weak values can be determined via measurements of arbitrary strength. One such proposal by Denkmayr et al. [Phys. Rev. Lett. 118, 010402 (2017)], carried out in neutron interferometry experiments, yielded better outcomes for strong than for weak measurements. We extend this scheme and explain how to implement it in an optical setting as well as in a quantum computational context. Our implementation in a quantum computing system provided by IBM confirms that weak values can be measured, with varying degrees of performance, over a range of measurement strengths. However, at least for this model, strong measurements do not always perform better than weak ones.

Funder

Fondo Nacional de Desarrollo Científico, Tecnológico y de Innovación Tecnológica

Publisher

American Vacuum Society

Reference34 articles.

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