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Chinese Physics, 2005, Vol. 14(2): 433-438    DOI: 10.1088/1009-1963/14/2/037

Population transfer and coherence in the adiabatic limit by counterintuitive and intuitive pulse sequences

Zhou Yan-Wei (周艳微)a, Ye Cun-Yun (叶存云)ab
a Optics Institute, Zhejiang University, Hangzhou 310027, China; b College Lasertek Inc., Houston, TX 77380 USA
Abstract  Two approaches of achieving population transfer and coherence are investigated for the three-level Λ system in the adiabatic limit. The effects of the laser pulse sequence on the population transfer efficiency and coherence are studied. Coherent control of quantum state and population is studied by numerical simulation based on self-consistent set of density matrix equations. It can be seen that the counterintuitive pulse sequence is more efficient in population transfer and coherence than the intuitive one.
Keywords:  population transfer      quantum coherence      three-level $\Lambda$ system      adiabatic  
Received:  02 August 2004      Revised:  27 October 2004      Accepted manuscript online: 
PACS:  42.50.Ar  
  32.80.Xx (Level crossing and optical pumping)  
  97.20.Tr (Population II stars (horizontal branch, metal poor, etc.))  
  02.60.Cb (Numerical simulation; solution of equations)  
Fund: Project supported by the Major Programme of the National Natural Science Foundation of China (Grant No 10334050) and the Initial Financial Support from Zhejinag University, Zhejiang Province China.

Cite this article: 

Zhou Yan-Wei (周艳微), Ye Cun-Yun (叶存云) Population transfer and coherence in the adiabatic limit by counterintuitive and intuitive pulse sequences 2005 Chinese Physics 14 433

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