Ultrafast population transfer in a Λ-configuration level system driven by few-cycle laser pulses

doi:10.1088/1674-1056/22/11/114210

中国物理B ›› 2013, Vol. 22 ›› Issue (11): 114210-114210.doi: 10.1088/1674-1056/22/11/114210

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇下一篇

Ultrafast population transfer in a Λ-configuration level system driven by few-cycle laser pulses

张文静, 谢小涛, 金璐玲, 白晋涛

Department of Physics, Northwest University, Xi’an 710069, China; National Photoelectric Technology and Functional Materials & Application of Science and Technology International Cooperation Base, Xi’an 710069, China; National Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base), Xi’an 710069, China

收稿日期:2013-03-08 修回日期:2013-04-08 出版日期:2013-09-28 发布日期:2013-09-28
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 61008016), the Natural Science Foundation in Shaanxi Province, China (Grant No. 2010JQ1002), and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20106101120020).

Ultrafast population transfer in a Λ-configuration level system driven by few-cycle laser pulses

Zhang Wen-Jing (张文静), Xie Xiao-Tao (谢小涛), Jin Lu-Ling (金璐玲), Bai Jin-Tao (白晋涛)

Department of Physics, Northwest University, Xi’an 710069, China; National Photoelectric Technology and Functional Materials & Application of Science and Technology International Cooperation Base, Xi’an 710069, China; National Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base), Xi’an 710069, China

Received:2013-03-08 Revised:2013-04-08 Online:2013-09-28 Published:2013-09-28
Contact: Zhang Wen-Jing, Xie Xiao-Tao E-mail:wjzhang@nwu.edu.cn;xtxie@nwu.edu.cn
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 61008016), the Natural Science Foundation in Shaanxi Province, China (Grant No. 2010JQ1002), and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20106101120020).

摘要/Abstract

摘要： The feasibility of population transfer from a populated level via an intermediate state to the target level driven by few-cycle pulses is theoretically discussed. The processes of on-or far-resonance stimulated Raman scattering with sequential or simultaneous ultrashort pulses are investigated respectively. We find that the ultrashort pulses with about two optical cycles can be used to realize the population operation. This suggests that the population transfer can be completed in the femtosecond time scale. At the same time, our simulation shows that the signal of the carrier-envelope-phase-dependent effect can be enlarged due to quantum interference in some conditions. Our theoretic study may promote the research on the coherent control via ultrashort pulses in the related fields.

关键词: ultrafast processes, coherent control of atomic interactions with photons, quantum state engineering and measurements

Abstract: The feasibility of population transfer from a populated level via an intermediate state to the target level driven by few-cycle pulses is theoretically discussed. The processes of on-or far-resonance stimulated Raman scattering with sequential or simultaneous ultrashort pulses are investigated respectively. We find that the ultrashort pulses with about two optical cycles can be used to realize the population operation. This suggests that the population transfer can be completed in the femtosecond time scale. At the same time, our simulation shows that the signal of the carrier-envelope-phase-dependent effect can be enlarged due to quantum interference in some conditions. Our theoretic study may promote the research on the coherent control via ultrashort pulses in the related fields.

Key words: ultrafast processes, coherent control of atomic interactions with photons, quantum state engineering and measurements

中图分类号: (Ultrafast processes; optical pulse generation and pulse compression)

42.65.Re

32.80.Qk (Coherent control of atomic interactions with photons) 42.50.Dv (Quantum state engineering and measurements)

张文静, 谢小涛, 金璐玲, 白晋涛. Ultrafast population transfer in a Λ-configuration level system driven by few-cycle laser pulses[J]. 中国物理B, 2013, 22(11): 114210-114210.

Zhang Wen-Jing (张文静), Xie Xiao-Tao (谢小涛), Jin Lu-Ling (金璐玲), Bai Jin-Tao (白晋涛). Ultrafast population transfer in a Λ-configuration level system driven by few-cycle laser pulses[J]. Chin. Phys. B, 2013, 22(11): 114210-114210.

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Ultrafast population transfer in a Λ-configuration level system driven by few-cycle laser pulses

Ultrafast population transfer in a Λ-configuration level system driven by few-cycle laser pulses

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