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Phys Rev Lett. 2007 Sep 21;99(12):120503. Epub 2007 Sep 17.

Experimental realization of one-way quantum computing with two-photon four-qubit cluster states.

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  • 1Physikalisches Institut, Ruprecht-Karls-Universit├Ąt Heidelberg, Philosophenweg 12, 69120 Heidelberg, Germany.


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.

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