Witnessing Quantumness with IBM Q

Yueh-Nan Chen^1,2*

¹Department of Physics, National Cheng-Kung University, Tainan, Taiwan
²QFort, National Cheng-Kung University, Tainan, Taiwan

* Presenter:Yueh-Nan Chen, email:yuehnan@mail.ncku.edu.tw

In this talk, I will first give an overview on the quantum computation project of NCKU team. I will then review several methods to witness quantumness, including the Bell-CHSH inequality, Leggett-Garg inequality, and EPR steering inequality. The concept of temporal steering will also be introduced when considering measurements on a single object at different times. Moreover, I will show that the dephasing dynamics itself can exhibit (non)classical traits, depending on the nature of the system-environment correlations and the related (im)possibility to simulate these dynamics with Hamiltonian ensembles–the classical strategy. Finally, I will demonstrate how to witness these quantumness on IBM Q.

Keywords: quantum computation , IBM Q