| ZHAO Jia-qiang,CAO Lian-zhen,YANG Yang,LU Huai-xin.Experimental simulation of spin-1 states by second-order type-II parametric down-conversion[J].Optoelectronics Letters,2017,13(1):74-76 |
| Experimental simulation of spin-1 states by second-order type-II parametric down-conversion |
| Author Name | Affiliation | | ZHAO Jia-qiang | Key Laboratory of Multi-photon Entanglement and Manipulation of Shandong Province, Department of Physics and Electronic Science, Weifang University, Weifang 261061, China | | CAO Lian-zhen | Key Laboratory of Multi-photon Entanglement and Manipulation of Shandong Province, Department of Physics and Electronic Science, Weifang University, Weifang 261061, China | | YANG Yang | Key Laboratory of Multi-photon Entanglement and Manipulation of Shandong Province, Department of Physics and Electronic Science, Weifang University, Weifang 261061, China | | LU Huai-xin | Key Laboratory of Multi-photon Entanglement and Manipulation of Shandong Province, Department of Physics and Electronic Science, Weifang University, Weifang 261061, China |
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| Abstract: |
| In this paper, by using the second-order parametric down-conversion of the nonlinear crystal, the spin-1 state is simulated by the two-photon polarization entangled modes. Through adjusting the laser pulse power density, the efficiency of second-order parametric down-conversion is enhanced. The intensity of the spin-1 state is 0.5/s. The fidelity of the state is up to F=0.891±0.002, and the contrast is C=17.3. The results provide a new method for Stern-Gerlach measurement on the spin-1 system. |
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