Experimental demonstration of photonic quantum ratchet  

实验实现光学量子棘轮（英文）

作　　者：张驰 李传锋 郭光灿 

机构地区：[1]Key Laboratory of Quantum Information, University of Science and Technology of China, Chinese Academy of Sciences [2]Synergetic Innovation Center of Quantum Information and Quantum Physics, University of Science and Technology of China

出　　处：《Science Bulletin》2015年第2期249-255,I0003,共8页科学通报（英文版）

基　　金：supported by the National Basic Research Program of China(2011CB921200);the National Natural Science Foundation of China(11325419,11274289,61327901);the Fundamental Research Funds for the Central Universities(WK2470000011)

摘　　要：We create a potential for light with a phase mirror and then experimentally realize a photonic quantum ratchet in an all-optical system, in which ratchet effects can be observed with the naked eye up to more than 22 steps, and quantum resonance can be demonstrated. Our method also provides a new means to simulate quantum particles with classical light, and it can be applied to investigate many other quantum phenomena.粒子在外势场中的演化可以用薛定谔方程描述.研究发现可以用光场的相位调制模拟粒子的外势场,只要制备出感兴趣的位相分布调制,就可以利用光束的演化模拟粒子在外势场中的演化.实验上利用相位镜产生锯齿状的外势,从而在全光系统中实现了量子棘轮,用肉眼就可以看到22步的棘轮效应.进一步还演示了棘轮效应中的量子共振现象.本工作实现了用经典光模拟量子粒子的演化,从而可以研究其他有趣的量子现象.

关 键 词：Quantum ratchet Quantum simulation Photonics Quantum resonance 

分 类 号：O431.2[机械工程—光学工程] TG142.71[理学—光学]