Robust quantum control by shaped pulse

TL;DR

This paper introduces a versatile method for designing smooth, high-fidelity, robust quantum control pulses suitable for ultrafast applications, generalizing composite pulse techniques with time-dependent phases.

Contribution

It presents a novel approach to generate smooth quantum control pulses that are robust and efficient, extending the composite pulse concept with a time-dependent phase.

Findings

Pulses achieve high fidelity and robustness.

Pulses are suitable for ultrafast quantum control.

Method produces low-area control pulses.

Abstract

Considering the problem of the control of a two-state quantum system by an external field, we establish a general and versatile method that allows the derivation of smooth pulses, suitable for ultrafast applications, that feature the properties of high-fidelity, robustness, and low area. Such shaped pulses can be viewed as a single-shot generalization of the composite pulse technique with a time-dependent phase.