Tuesday, December 11, 2012

1212.1817 (Xiao-Fan Xu et al.)

Demonstration of active feedforward one-way quantum computing with
photon-matter hyperentanglement
   [PDF]

Xiao-Fan Xu, Xiao-Hui Bao, Jian-Wei Pan
We report an optical one-way quantum computing experiment with stationary quantum memory involved. First we create a hybrid four-qubit cluster state with two qubits propagating as photons and the other two stationary and stored in a laser-cooled atomic-ensemble quantum memory, and characterize it with entanglement witness and quantum state tomography. Then, by making use of this cluster state and fast operations of electro-optic modulators, we realize memory-assisted feedforward operations and demonstrate deterministic single-qubit rotation as an example.
View original: http://arxiv.org/abs/1212.1817

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