# Robust Coherent Superposition of States using Quasiadiabatic Inverse Engineering

## TL;DR

This paper introduces a method combining invariant-based inverse engineering and quasiadiabatic conditions to create robust, high-fidelity superpositions of quantum states with simple, low-area pulses, enhancing error robustness.

## Contribution

It presents a novel approach integrating inverse engineering and quasiadiabaticity for robust quantum state superpositions with simple pulse designs.

## Key findings

- Pulses are robust against pulse area errors.
- Pulses are robust against detuning errors.
- Achieves high fidelity in quantum superpositions.

## Abstract

We use the invariant-based inverse engineering subject to the quasiadiabatic condition to produce robust and high fidelity coherent superposition of quantum states. The inverse engineering provides shortcuts to the desired quantum-state evolution while the quasiadiabaticity provides robustness with respect to errors. We derive simple pulses with low areas which are robust with respect to pulse area and detuning.