科研之友
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摘要
Absorption spectrum of a system of two closely spaced identical atoms displays, at certain preparation, a dip that can be much narrower than the natural linewidth. This preparation includes (i) application of a strong magnetic field at an angle a, that is very close to the magic angle alpha(0) = arccos(1/root 3) approximate to 54.7 degrees, with respect to the direction from one atom to another, and (ii) in-plane illumination by a laser light in the form of a nonresonant standing wave polarized at the same angle a. Both qualitative and quantitative arguments for the narrow dip effect are presented.
- 出版日期2015-11-17
