光电子快报(英文版), 2017, 13 (1): 74, Published Online: Sep. 13, 2018
Experimental simulation of spin-1 states by second-order type-II parametric down-conversion
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.
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]. 光电子快报(英文版), 2017, 13(1): 74.