Phys. Rev. A 76, 023417 (2007) [10 pages]Chirping a two-photon transition in a multistate ladderReceived 10 February 2007; published 20 August 2007 We consider a two-photon transition in a specific ladder system driven by a chirped laser pulse. In the weak field limit, we find that the excited state probability amplitude arises due to interference of multiple quantum paths which are weighted by quadratic phase factors. The excited state population has the form of a Gauss sum which plays a prominent role in number theory. © 2007 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevA.76.023417
DOI:
10.1103/PhysRevA.76.023417
PACS:
32.80.−t, 42.50.Md, 02.10.De
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