# Reverse engineering protocols for controlling spin dynamics

## TL;DR

This paper introduces reverse engineering protocols to precisely control spin dynamics, enabling manipulation of single and multiple spins, robust control against parameter uncertainties, and entanglement generation in spin systems.

## Contribution

It presents novel reverse engineering techniques for fast and robust control of spin systems, including entanglement creation and parameter-insensitive protocols.

## Key findings

- Protocols successfully manipulate single and multiple spins
- Robust control achieved despite uncertainties in gyromagnetic factors
- Entangled states generated in coupled spin systems

## Abstract

We put forward reverse engineering protocols to shape in time the components of the magnetic field to manipulate a single spin, two independent spins with different gyromagnetic factors, and two interacting spins in short amount of times. We also use these techniques to setup protocols robust against the exact knowledge of the gyromagnetic factors for the one spin problem, or to generate entangled states for two or more spins coupled by dipole-dipole interactions.