量子物理基础

研究方向

在量子力学提出后,其完备性就引起了广泛的争论,爱因斯坦认为存在着更深层次的定域实在隐变量理论。60年代贝尔提出贝尔不等式,为检测量子物理的完备性提供了实验途径。在过去几十年里,大量物理实验均支持了量子物理的完备性。但以往的实验中可能存在漏洞,从而不能完全排除隐变量理论。实验漏洞大体上分为三类,定域性漏洞,效率漏洞和自由选择漏洞。

量子物理基础实验室的主要研究内容就是发展高效率参量下转换纠缠光源,高速外场时间同步技术和高速随机数产生等技术,从而实现无漏洞的贝尔不等式检验。在贝尔不等式检验的基础上,纠缠坍缩速度,大尺度下量子非定域性,量子转向,人类自由意志随机性和遥远星体随机性研究等物理问题也可以得以检验。贝尔不等式破坏也是量子通信的重要资源,在此基础上可以开展无漏洞的随机数产生和无漏洞量子密钥分发等新型量子通信协议。

相关论文

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  • Cao, Y., Li, Y. -H., Zou, W. -J., Li, Z. -P., Shen, Q., Liao, S. -K., Ren, J. -G., Yin, J., Chen, Y. -A., Peng, C. -Z. & Pan, J. -W. Bell Test over Extremely High-Loss Channels: Towards Distributing Entangled Photon Pairs between Earth and the Moon. Physical Review Letters 120, 140405 (2018).
  • Liu, Y., Zhao, Q., Li, M. -H., Guan, J. -Y., Zhang, Y., Bai, B., Zhang, W., Liu, W. -Z., Wu, C., Yuan, X., Li, H., Munro, W., Wang, Z., You, L., Zhang, J., Ma, X., Fan, J. -Y., Zhang, Q. & Pan, J. -W. Device-independent quantum random-number generation. Nature 3, (2018).
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  • Li, L., Li, Y., Zhang, Y. -L., Yu, S., Lu, C. -Y., Liu, N. -L., Zhang, J. & Pan, J. -W. Phase amplification in optical interferometry with weak measurement. Physical Review A 97, 033851 (2018).
  • Li, M. -H., Wu, C., Zhang, Y., Liu, W. -Z., Bai, B., Liu, Y., Zhang, W., Zhao, Q., Li, H., Wang, Z., You, L., Munro, W., Yin, J., Zhang, J., Peng, C. -Z., Ma, X., Zhang, Q., Fan, J. -Y. & Pan, J. -W. Test of Local Realism into the Past without Detection and Locality Loopholes. Physical Review Letters 121, 080404 (2018).
  • Cao, Y., Li, Y. -H., Cao, Z., Yin, J., Chen, Y. -A., Yin, H. -L., Chen, T. -Y., Ma, X., Peng, C. -Z. & Pan, J. -W. Direct counterfactual communication via quantum Zeno effect. Proceedings of the National Academy of Sciences of the United States of America 114, 4920-4924 (2017).
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  • Li, C. -M., Chen, K., Chen, Y. -N., Zhang, Q., Chen, Y. -A. & Pan, J. -W. Genuine High-Order Einstein-Podolsky-Rosen Steering. Physical Review Letters 115, 010402 (2015).
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