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Observation of Sub-femtosecond Polarization Beats Using Twin Noisy Driving Fields |
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| Authors: | LI Chuang-She SHEN Lei-Jian DU Yi-Gang ZHENG Huai-Bin NIE Zhi-Qiang YANG Yong-Ming ZHANG Wei-Feng GAN Chen-Li ZHANG Yan-Peng |
| Affiliation: | Key Laboratory for Physical Electronics and Devices of the Ministry of Education, Xi'an Jiaotong University, Xi'an 710049Department of Physics, University of Arkansas, Fayetteville, Arkansas 72701, USASchool of Science, Xi'an University of Architecture and Technology, Xi'an 710055 |
| Abstract: | We study the phase-conjugate polarization interference in a V-type three-level system and obtain an analytic closed form for the second-order stochastic correlation of sum-frequency polarization beat. In our Na vapour atomic system pumped by laser pulse of nano-second timescale duration, we experimentally demonstrate an ultrafast modulation of the four-wave mixing signal intensity with a sub-femtosecond timescale period, corresponding to the sum-frequency of the resonant transitions from 3S1/2 to 3P1/2 and 3P3/2. |
| Keywords: | 42 65 Sf 42 65 Re 32 80 Qk |
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