We report an experimental realization of one-way quantum computing on a two-photon four-qubit cluster state. This is accomplished by developing a two-photon cluster state source entangled both in polarization and spatial modes. With this special source, we implemented a highly efficient Grover's search algorithm and high-fidelity two qubits quantum gates. Our experiment demonstrates that such cluster states could serve as an ideal source and a building block for rapid and precise optical quantum computation.
@article{arxiv.0705.0174,
title = {Experimental realization of one-way quantum computing with two-photon four-qubit cluster states},
author = {Kai Chen and Che-Ming Li and Qiang Zhang and Yu-Ao Chen and Alexander Goebel and Shuai Chen and Alois Mair and Jian-Wei Pan},
journal= {arXiv preprint arXiv:0705.0174},
year = {2012}
}