以超冷分子系综为载体的量子信息物理实现研究在涉及国家安全、经济发展与社会进步等诸方面有重要意义。超冷分子的制备和相干操控与量子信息处理的交叉结合将为原子分子物理赋予全新的科学意义。本项目旨在以光学偶极阱俘获密集超冷铯原子样品为起点，利用超冷铯分子独有的长程态双阱隧穿机制，采用受激拉曼光缔合和宽带光学泵浦相结合的实验方案，通过光学频率梳对多光场相干操控，实现密集的低振转基态超冷铯分子的相干制备，研究低振转基态超冷分子的相干制备机制和布居转移过程中的相关动力学行为。通过控制光场对密集的低振转基态超冷铯分子振转能级布居实现快速有效的相干操控，并研究该过程中光场与超冷分子系综相互作用的物理机制，以及相干光场对提高布居转移率的影响。同时探索基于超冷分子系统作为载体的初步量子信息处理的可能途径和实验方案。

Research of the physical realization of quantunm information with ultracold molecular ensemble as a carrier has exerted tremendous impact on national security, economic development and social progress. The cross-linking of formation of ultracold molecules and coherent manipulating as well as quantum information processing has endowed the atomic and molecular physics with brand new scientific significance. This programm starts from trapping dense ultracold atoms samples in an optical dipole trap, with tunneling mechanism induced by the unique long-range double potential well, combined with stimulated Raman photoassociation and broadband optical pumping, and coherently control multiple light fields via an optical frequency comb, finally realize the aim of coherent formation of dense ultracold ground state molecules populated in low-lying rovibrational levls, then develop the research on coherent forming mechnisms of these molecules and the relative dynamic behaviors in population transferring process. the program will realize the aim of rapid and efficient control of population transferring of the low-lying vibrational levels in the dense ultracold ground state molecules by using of controlling coherently lasers, and investigate the physical mechanisms of interaction between multiple light fields and ultracold molecular ensemble in the process, and the influence of the coherent optical field on improving the population transferring efficiency. In addition, this program would continue to explore the effective approaches and experimental schemes of the preliminary quantum information processing based on the ultracold molecular system.