量子信息与量子光学的实验研究

1:非经典量子光场的制备

非经典量子光场如偏振纠缠、轨道角动量纠缠等是研究量子力学基本原理、量子通信和量子通信的重要资源。高质量的量子光源是完成量子光学实验的重要前提。我们小组围绕量子信息的关键技术--非经典光源的制备开展系列研究工作,分别制备了简并与非简并偏振纠缠光源、双色轨道角动量纠缠光源、与原子现款相匹配的窄线宽非经典光子源,在PRA、OL、OE等刊物发表系列论文。
主要论文:
[1] Z.-Y. Zhou, Y.-K. Jiang, D.-S. Ding, B.-S. Shi, and G.-C. Guo, Actively switchable nondegenerate polarization-entangled photon-pair distribution in dense wave-division multiplexing, Phys. Rev. A 87, 045806 (2013).
[2] Z.-Y. Zhou, Y. Li, D.-S. Ding, W. Zhang, S. Shi, B. -S. Shi, and G.-C. Guo, Classical to quantum optical network link for orbital angular momentum carrying light, Opt. Express 23, 18435-18444(2015).
[3] Z.-Y. Zhou, D.-S. Ding, Y. Li, F.-Y. Wang, and B.-S. Shi, Cavity-enhanced bright photon pairs at telecom wavelengths with a triple-resonance configuration, J. Opt. Soc. Am. B 31, 128 (2014).
[4] Z.-Y. Zhou, Y.-K. Jiang, D.-S. Ding, and B.-S. Shi, An ultra-broadband continuously-tunable polarization entangled photon-pair source covering the C+L telecom bands based on a single type-II PPKTP crystal, J. mod. Opt., 60, 720(2013).

2:量子接口---图像变频
目前用于探测红外波段的红外敏感探测器价格昂贵,探测效率低。而红外探测又在生物探测,夜视,化学成像等领域都具有很大的应用。我们小组围绕解决红外图像探测器精度差、效率低的缺点以及高容量量子网络的关键技术--高维量子接口的实现开展了图像的变频研究,首次利用原子的四波混频效应实现了图像的频率变换,把红外波段的图像成功地转换到了可见波段,并用可见光探测器探测。MIT的TechnologyReview网站以“直接把红外光转成可见光的铷探测器”为题进行了积极评价。在PRA、OL等发表系列论文。

主要论文:
1.Dong-Sheng Ding, Zhi-Yuan Zhou, Wen Huang, Bao-Sen Shi, Xu-Bo Zou, and Guang-Can Guo. Experimental up-conversion of images. PHYSICAL REVIEW A 86, 033803 (2012).
2.Dong-Sheng Ding, Zhi-Yuan Zhou, Bao-Sen Shi, Xu-Bo Zou, and Guang-Can Guo. Image transfer through two sequential four-wave-mixing processes in hot atomic vapor. PHYSICAL REVIEW A 85, 053815 (2012).