Spin state detection is a key but very challenging step for any spin-based solid-state quantum computing technology. In fullerene based quantum computer technologies, we here propose to detect the single spin inside a fullerene by transferring the quantum information from the endohedral spin to the ground states of a molecular nanomagnet Fe8, with large spin S=10. We show how to perform the required SWAP operation and how to read out the information through state-of-the-art techniques such as micro-SQUID.
@article{arxiv.quant-ph/0412081,
title = {Single spin detection by qubit SWAP to a molecular nanomagnet},
author = {M Feng and J Twamley},
journal= {arXiv preprint arXiv:quant-ph/0412081},
year = {2015}
}