Pei Zhang, Yan Jiang, Rui-Feng Liu, Hong Gao, Hong-Rong Li, Fu-Li Li
Deutsch's algorithm is the simplest quantum algorithm which shows the acceleration of quantum computer. In this paper, we theoretically advance a scheme to implement quantum Deutsch's algorithm in spin-orbital angular momentum space. Our scheme exploits a newly developed optical device called "q-plate", which can couple and manipulate the spin-orbital angular momentum simultaneously. This experimental setup is of high stability and efficiency theoretically for there is no interferometer in it.
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http://arxiv.org/abs/1207.5505
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