Numerical optimization of amplitude-modulated pulses in microwave-driven entanglement generation

TL;DR

This paper presents a numerical optimization method for microwave pulse envelopes to enhance the robustness, speed, and energy efficiency of entangling gates in trapped ion systems, advancing scalable quantum computing.

Contribution

It introduces a novel numerical optimization approach for amplitude-modulated microwave pulses, improving entanglement fidelity and operational speed in trapped ion quantum gates.

Findings

Optimized pulses show increased robustness against motional noise.

Enhanced gate speed and energy efficiency achieved.

Potential for scalable quantum computing implementations.

Abstract

Microwave control of trapped ions can provide an implementation of high-fidelity two-qubit gates free from errors induced by photon scattering. Furthermore, microwave conductors may be embedded into a scalable trap structure, providing the chip-level integration of control that is desirable for scaling. Recent developments have demonstrated how amplitude modulation of the gate drive can permit a two-qubit entangling operation to become robust against motional mode noise and other experimental imperfections. Here, we discuss a method for the numerical optimization of the microwave pulse envelope to produce gate pulses with improved resilience, faster operation and higher energy efficiency.