1. State Key Laboratory of Transient Optics and Photonics Xi'an Institute of Optics and Precision Mechanics Chinese Academy of Sciences Xi'an 710119 China
2. Interdisciplinary Center for Quantum Information and Department of Physics Zhejiang University Hangzhou 310027 China
3. Department of Physics and Astronomy College of Staten Island, CUNY Staten Island New York 10314 USA
4. The Graduate Center, CUNY New York NY 10016 USA