Appearance of Gibbs states in quantum-state tomography

作者:Rau Jochen*
来源:Physical Review A, 2014, 90(6): 062114.
DOI:10.1103/PhysRevA.90.062114

摘要

investigate the extent to which the description of quantum systems by Gibbs states can be justified purely on the basis of tomographic data, without recourse to theoretical concepts such as infinite ensembles, environments, or information or to the systems%26apos; dynamics. I show that the use of Gibbs states amounts to a relevance hypothesis, which I spell out in detail. This hypothesis can be subjected to statistical hypothesis testing and hence assessed on the basis of the experimental data.

  • 出版日期2014-12-10