期刊
OPTICS COMMUNICATIONS
卷 331, 期 -, 页码 198-203出版社
ELSEVIER
DOI: 10.1016/j.optcom.2014.06.013
关键词
Ultra-short strong pulses; Few cycles; Phase jump; Two-level systems
类别
资金
- Herman F. Heep and Minnie Belle Heep Texas A&M University Endowed Fund
- Robert A. Welch Foundation [A-1261]
We present a model describing the use of ultra-short strong pulses to control the population of the excited level of a two-level quantum system. In particular, we study an off-resonance excitation with a few cycles pulse which presents a smooth phase jump i.e. a change of the pulse's phase which is not steplike, but happens over a finite time interval. A numerical solution is given for the time-dependent probability amplitude of the excited level. The control of the excited level's population is obtained acting on the shape of the phase transient, and other parameters of the excitation pulse. (C) 2014 Elsevier B.V. All rights reserved.
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