Experimental demonstration of a fast calibration method for integrated photonic circuits with cascaded phase shifters

With the development of research on integrated photonic quantum information processing, the integration level of the integrated quantum photonic circuits has been increasing continuously, which makes the calibration of the phase shifters on the chip increasingly difficult. For the calibration of multiple cascaded phase shifters that is not easy to be decoupled, the resources consumed by conventional brute force methods increase exponentially with the number of phase shifters, making it impossible to calibrate a relatively large number of cascaded phase shifters. In this work, we experimentally validate an efficient method for calibrating cascaded phase shifters that achieves an exponential increase in calibration efficiency compared to the conventional method, thus solving the calibration problem for multiple cascaded phase shifters. Specifically, we experimentally calibrate an integrated quantum photonic circuit with nine cascaded phase shifters and achieve a high-precision calibration with an average fidelity of 99.26%.     

基于政府驱动的新能源汽车产业合作创新演化博弈研究

自战略性新兴产业提出以来,战略性新兴产业一直飞速发展,而新能源汽车产业作为战略性新兴产业的重要组成部分,越来越受到政府的重视。本文基于演化博弈理论建立汽车制造企业与学研机构的演化博弈模型,分别在市场机制与政府鼓励机制下,用数值仿真展示参数取值变化对演化结果的影响。研究发现,政府对于技术研发的支持力度、合作创新双方利益分配系数、政府采购力度、合作双方约定的罚金以及合作创新成本与额外收益的关系对新能源汽车合作创新有影响。     

政府推动下的军民融合深度发展协同创新模式研究-以西安市为例

为开创新时代军民融合发展新局面,本文建立了政府推动下的军民融合深度发展协同创新模型。通过分析军民融合协同创新的演化过程,并结合数值仿真模拟讨论了政府基础设施建设、政府采购、政府资助对军民融合深度发展协同创新参与三方行为的影响。研究表明:(1)政府对军民融合深度发展的基础设施建设支持力度会促使军、民企业选择协同创新;随着军民融合深度发展产业的不断成熟,政府会借机放弃基础设施建设,转向其它配套政策的支持。(2)政府采购会持续促使民用企业选择协同创新;政府采购力度较小时,军工企业会向中途背叛方向演化,政府采购力度越大,越有利于军工企业向协同创新方向演化。(3)低强度的政府资助难以促使民用企业向协同创新的方向演化,中高强度的政府资助可以促使民用企业向协同创新方向演化;政府资助对军工企业协同创新短期内无显著影响。