Fig. 1. Schematic of generation system of polarization squeezing.偏振压缩光场制备原理图

Fig. 2. Measurement of quantum noise of Stokes component (a) , (b) , (c) , (d) . HWP, half-wave plate; QWP, quarter-wave plate; PBS, polarization beam splitter; +/−, positive/negative power combiner. Stokes分量(a) , (b) , (c) , (d) 的量子噪声的实验测量(HWP, 二分之一波片; QWP, 四分之一波片; PBS, 偏振分束棱镜; +/−, 功率加法/减法器)

Fig. 3. Quantum noises of Stokes component of polarization squeezedlight^[61]: (a) ; (b) ; (c) ; (d) . 偏振压缩光Stokes分量的量子噪声^[61] 　(a) ; (b) ; (c) ; (d)

Fig. 4. Schematic for the generation system of polarization entanglement.偏振纠缠制备原理图

Fig. 5. Schematic for the generation of tripartite polarization entangled state. BS1, beam splitter1; BS2, beam splitter2; PBS1, polarization beam splitter1; PBS2, polarization beam splitter2; PBS3, polarization beam splitter3.三组分偏振纠缠态产生方案(BS1, 光学分束器1; BS2, 光学分束器2; PBS1, 偏振分束棱镜1; PBS2, 偏振分束棱镜2; PBS3, 偏振分束棱镜3)

Fig. 6. Measured correlation variances of (a) , (b) , (c) , (d) , (e) , (f) over the analysis frequency rangefrom 1 to 6 MHz. 分析频率在1—6 MHz间测量的Stokes关联方差　(a) ; (b) ; (c) ; (d) ; (e) ; (f)

Fig. 7. Schematic of atom-atom entanglement generation system.原子系综纠缠示意图

Fig. 8. Experimental device diagram of quantum entanglement among three distant atomic ensembles.三原子系综纠缠实验装置图

Fig. 9. Sequence control of signal and control light.信号光与控制光的时序控制图

Fig. 10. Measured normalized correlation variances of input and released optical submodes.测量的输入模式和释放模式的关联方差