[en] This paper aims at establishing a new system to evaluate the level of urban energy development. With the continuous progress of urban energy transformation, it is an urgent problem to make effective use of urban energy data to evaluate the development of urban energy. By summarizing the characteristics of urban energy data and analyzing the application demand of energy management departments such as electric power enterprises at present, the basic principles of selecting energy data evaluation index are determined. Through the study of the classification of energy data, the evaluation indexes are initially selected. Then, based on the analytic hierarchy process, optimize the evaluation indexes. Finally, this paper establishes a comprehensive evaluation system which can reasonably describe the energy development model, as we see from the example of Suzhou. (paper)

[en] Based on our work on single cesium atoms trapped in a large-magnetic-gradient vapour-cell magneto-optical trap (MOT), the signal-to-noise ratio (SNR) is remarkably improved. Also a far-off-resonance optical dipole trap (FORT) formed by a strongly-focused 1064 nm single frequency Nd:YVO₄ laser beam is introduced. One cesium atom is prepared in the MOT, and then it can transfer successfully between the MOT and the FORT which is overlapped with the MOT. Utilizing the effective transfer, the lifetime of single atoms trapped in the FORT is measured to be 6.9 ± 0.3 s. Thus we provide a system where the atomic qubit can be coherently manipulated. (atomic and molecular physics)