Optimizing Qubit Control Pulses for State Preparation

TL;DR

This paper presents optimized control pulse techniques for superconducting qubits that reduce errors and improve fidelity, with methods applicable across various quantum computing architectures.

Contribution

It introduces refined pulse engineering strategies that mitigate coherent errors in qubit control, enhancing performance in superconducting and other quantum systems.

Findings

Refined pulse schemes reduce coherent errors.

Adjustments to frequency and duration improve fidelity.

Techniques are applicable across multiple quantum architectures.

Abstract

In the burgeoning field of quantum computing, the precise design and optimization of quantum pulses are essential for enhancing qubit operation fidelity. This study focuses on refining the pulse engineering techniques for superconducting qubits, employing a detailed analysis of Square and Gaussian pulse envelopes under various approximation schemes. We evaluated the effects of coherent errors induced by naive pulse designs. We identified the sources of these errors in the Hamiltonian model's approximation level. We mitigated these errors through adjustments to the external driving frequency and pulse durations, thus, implementing a pulse scheme with stroboscopic error reduction. Our results demonstrate that these refined pulse strategies improve performance and reduce coherent errors. Moreover, the techniques developed herein are applicable across different quantum architectures, such as ion-trap, atomic, and photonic systems.