中国物理B ›› 2011, Vol. 20 ›› Issue (3): 33403-033403.doi: 10.1088/1674-1056/20/3/033403

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Dynamical effects of the four-wave mixing enhancement induced by constructive quantum interference

薛艳, 王刚, 吴金辉, 张冰, 高锦岳   

  1. College of Physics, Jilin University, Changchun 130023, China; Key Lab of CLAMS of Educational Ministry, Changchun 130023, China
  • 收稿日期:2010-04-17 修回日期:2010-06-20 出版日期:2011-03-15 发布日期:2011-03-15
  • 基金资助:
    Project supported by National Natural Science Foundation of China (Grant Nos. 10774059 and 10904047), the National Basic Research Program of China (Grant No. 2006CB921103), the doctoral program foundation of institution of High Education of China (Grant N

Dynamical effects of the four-wave mixing enhancement induced by constructive quantum interference

Xue Yan(薛艳),Wang Gang(王刚),Wu Jin-Hui(吴金辉), Zhang Bing(张冰),and Gao Jin-Yue(高锦岳)   

  1. College of Physics, Jilin University, Changchun 130023, China Key Lab of CLAMS of Educational Ministry, Changchun 130023, China
  • Received:2010-04-17 Revised:2010-06-20 Online:2011-03-15 Published:2011-03-15
  • Supported by:
    Project supported by National Natural Science Foundation of China (Grant Nos. 10774059 and 10904047), the National Basic Research Program of China (Grant No. 2006CB921103), the doctoral program foundation of institution of High Education of China (Grant No. 20060183046) and the basic research foundation of Jilin University of China (Grant No. 200903326).

摘要: In a four-level system of ultracold 87Rb atoms, through analytical and numerical calculations we propose an efficient scheme to achieve the enhanced four-wave mixing process and demonstrate its dynamical control by various parameters such as the travel distance z, probe detuning $\delta$ and the probe pulse width $\tau$. In particular, we find that the maximal intensity of the nonlinearly generated signal pulse can be about 80% of the initial input probe under the optimal condition. This greatly enhanced conversion efficiency occurs due to the constructive quantum interference between two different components of the generated signal pulse.

关键词: four-wave mixing, quantum interference

Abstract: In a four-level system of ultracold 87Rb atoms, through analytical and numerical calculations we propose an efficient scheme to achieve the enhanced four-wave mixing process and demonstrate its dynamical control by various parameters such as the travel distance z, probe detuning $\delta$ and the probe pulse width $\tau$. In particular, we find that the maximal intensity of the nonlinearly generated signal pulse can be about 80% of the initial input probe under the optimal condition. This greatly enhanced conversion efficiency occurs due to the constructive quantum interference between two different components of the generated signal pulse.

Key words: four-wave mixing, quantum interference

中图分类号:  (Coherence and correlation)

  • 34.80.Pa
42.50.-p (Quantum optics) 42.65.-k (Nonlinear optics)