Experimental Test of Contextuality based on State Discrimination with a Single Qubit
Abstract
Exploring quantum phenomena beyond predictions of any classical model has fundamental importance to understand the boundary of classical and quantum descriptions of nature. As a typical property that a quantum system behaves distinctively from a classical counterpart, contextuality has been studied extensively and verified experimentally in systems composed of at least three levels (qutrit). Here we extend the scope of experimental test of contextuality to a minimal quantum system of only two states (qubit) by implementing the minimum error state discrimination on a single Yb ion. We observe a substantial violation of a no-go inequality derived by assuming non-contextuality, and firmly conclude that the measured results of state discrimination cannot be reconciled with any non-contextual description. We also quantify the contextual advantage of state discrimination and the tolerance against quantum noises.
Keywords
Cite
@article{arxiv.2206.10828,
title = {Experimental Test of Contextuality based on State Discrimination with a Single Qubit},
author = {Qiuxin Zhang and Chenhao Zhu and Yuxin Wang and Liangyu Ding and Tingting Shi and Xiang Zhang and Shuaining Zhang and Wei Zhang},
journal= {arXiv preprint arXiv:2206.10828},
year = {2022}
}
Comments
5 pages, 3 figures