# Simulation of four-body interaction in a nuclear magnetic resonance quantum information processor

## TL;DR

This paper demonstrates the experimental simulation of four-body interactions using a four-qubit nuclear magnetic resonance quantum processor, highlighting the potential for simulating complex quantum systems.

## Contribution

It presents the first experimental realization of four-body interactions in a NMR quantum processor using strongly modulating pulses.

## Key findings

- Good agreement between experimental results and theoretical predictions
- Successful implementation of spin selective excitation for four-body interactions
- Advancement in quantum simulation capabilities for many-body systems

## Abstract

Four-body interaction plays an important role in many-body systems, and it can exhibit interesting phase transition behaviors. Historically it was the need to efficiently simulate quantum systems that lead the idea of a quantum computer. In this Letter, we report the experimental demonstration of a four-body interaction in a four- qubit nuclear magnetic resonance quantum information processor. The strongly modulating pulse is used to implement spin selective excitation. The results show a good agreement between theory and experiment.