Efficient Excitation of a Symmetric Collective Atomic State with a Single-Photon Through Dipole Blockade |
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Authors: | HONG Fang-Yu XIONG Shi-Jie FU Jing-Li ZHU Zhi-Yan |
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Institution: | 1. Department of Physics, Center for Optoelectronics Materials and Devices, Zhejiang Sci-Tech University, Xiasha College Park, Hangzhou 310018, China;
2. National Laboratory of Solid State Microstructures and Department of Physics, Nanjing University, Nanjing 210093, China |
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Abstract: | In the famous quantum communication scheme developed by Duan et al.L.M.Duan,M.D.Lukin,J.I.Cirac,and P.Zoller,Nature(London) 414(2001) 413],the probability of successful generating a symmetric collective atomic state with a single-photon emitted have to be far smaller than 1 to obtain an acceptable entangled state.Based on strong dipole-dipole interaction between two Rydberg atoms,two simultaneous excitations in an atomic ensemble are greatly suppressed,which makes it possible to excite a mesoscopic cold atomic ensemble into a near-ideal singly-excited symmetric collective state accompanied by a signal-photon with near unity success probability. |
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Keywords: | collective enhancement dipole blockade atomic ensemble single-photon |
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