title: Experimental realization of one-way quantum computing with two-photon four-qubit cluster states.
abstract: 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-qubit 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.
authors.affiliation: Physikalisches Institut, Ruprecht-Karls-Universität Heidelberg, Philosophenweg 12, 69120 Heidelberg, Germany.
authors.forename: Kai
authors.initials: K
authors.lastname: Chen
authors.forename: Che-Ming
authors.initials: CM
authors.lastname: Li
authors.forename: Qiang
authors.initials: Q
authors.lastname: Zhang
authors.forename: Yu-Ao
authors.initials: YA
authors.lastname: Chen
authors.forename: Alexander
authors.initials: A
authors.lastname: Goebel
authors.forename: Shuai
authors.initials: S
authors.lastname: Chen
authors.forename: Alois
authors.initials: A
authors.lastname: Mair
authors.forename: Jian-Wei
authors.initials: JW
authors.lastname: Pan