Vector Field Visualization of Single-Qubit State Tomography

Adrien Suau (1, 2) , Marc Vuffray (3) , Andrey Y. Lokhov (3) , Lukasz Cincio (3) , Carleton Coffrin (3)

1 CERFACS - Centre Européen de Recherche et de Formation Avancée en Calcul Scientifique
2 LIRMM | SmartIES - Smart Integrated Electronic Systems
3 LANL - Los Alamos National Laboratory

As the variety of commercially available quantum computers continues to increase so does the need for tools that can characterize, verify and validate these computers. This work explores using quantum state tomography for characterizing the performance of individual qubits and develops a vector field visualization for presentation of the results. The proposed protocol is demonstrated in simulation and on quantum computing hardware developed by IBM. The results identify qubit performance features that are not reflected in the standard models of this hardware, indicating opportunities to improve the accuracy of these models. The proposed qubit evaluation protocol is provided as free open-source software to streamline the task of replicating the process on other quantum computing devices.

Mots clés: Computer; Quantum; Field theory; Vector; Qubit; Hardware; Performance; Programming; Quantum computing; Quantum state tomography; Qubit benchmark

Domaines: Physique Quantique [quant-ph]

Adrien Suau, Marc Vuffray, Andrey Y. Lokhov, Lukasz Cincio, Carleton Coffrin. Vector Field Visualization of Single-Qubit State Tomography. QCE 2022 - IEEE International Conference on Quantum Computing and Engineering, Sep 2022, Broomfield, United States. pp.528-534, ⟨10.1109/QCE53715.2022.00075⟩. ⟨hal-03672836⟩