Accuracy features for quantum process tomography using superconductor phase qubits

TL;DR

This paper introduces a method for precise quantum process tomography using superconductor phase qubits, analyzing accuracy for a 2-qubit gate affected by capacitive coupling, with implications for quantum technology quality control.

Contribution

The paper presents a detailed analysis of quantum process tomography accuracy for superconductor phase qubits, focusing on a 2-qubit gate with capacitive coupling effects.

Findings

Quantitative assessment of tomography accuracy for SQiSW gate

Application of universal quantum tomography method to superconductor qubits

Potential improvements in quantum information technology quality control

Abstract

We propose a method for precision statistical control of quantum processes based on superconductor phase qubits. Using the universal quantum tomography method, we provide a detailed analysis of accuracy of tomography for a 2-qubit gate SQiSW, which arises due to capacitive coupling between qubits. The developed approach could be successfully applied for quality and efficiency problems of superconductor quantum information technologies.