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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)† |
| College of Physics, Jilin University, Changchun 130023, China Key Lab of CLAMS of Educational Ministry, Changchun 130023, China |
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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.
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Received: 17 April 2010
Revised: 20 June 2010
Accepted manuscript online:
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PACS:
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34.80.Pa
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(Coherence and correlation)
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42.50.-p
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(Quantum optics)
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42.65.-k
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(Nonlinear optics)
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| Fund: 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). |
Cite this article:
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) Dynamical effects of the four-wave mixing enhancement induced by constructive quantum interference 2011 Chin. Phys. B 20 033403
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