We propose a toy model of ion-atom hybrid quantum system for quantum computing. We show that when two atomic qubits in two largely separated optical tweezers interact with a single trapped ion through Rydberg excitation of the atoms, there exists an ion-mediated atom-atom interaction which exceeds the direct interatomic interaction at large separation. We employ this mediated interaction to demonstrate two-qubit control phase gate operation with 97\% fidelity by addressing the individual atomic qubits with lasers.
@article{arxiv.2409.09991,
title = {Ion-mediated interaction and controlled phase gate operation between two atomic qubits},
author = {Subhra Mudli and Subhanka Mal and Sinchan Snigdha Rej and Anushree Dey and Bimalendu Deb},
journal= {arXiv preprint arXiv:2409.09991},
year = {2024}
}