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Journal of Physics B Atomic Molecular and Optical Physics

Role of atomic and light polarization in an adiabatic passage experiment

Witold Chałupczak, K. Szymaniec

Published Feb 13, 2006• 0 citations
Publisher

Abstract

Adiabatic passage with optical pulses has been used as an efficient tool for the transfer of atomic populations between Zeeman sublevels. The composition of the final state after adiabatic passage is investigated in the context of applications to atomic fountain frequency standards. Theoretical and experimental studies on the influence of the purity of the initial state on the result of the transfer are presented. Similarly, the role of the quality of polarization of the laser pulses in the process of adiabatic passage is discussed.

DOI
10.1088/0953-4075/39/5/007

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We study atomic-beam deflection by adiabatic passage between Zeeman ground levels via Raman transitions induced by counterpropagating ${\mathrm{\ensuremath{\sigma}}}^{\ifmmode\pm\else\textpm\fi{}}$-polarized lasers. We show that complete population transfer between the ground states can be achieved, which corresponds to the scattering of the atomic wave packet into a single final momentum state by absorption and induced emission of laser photons. Although the lasers can be resonant, the excited state(s) are never populated during the adiabatic transfer, which suppresses the effects of spontaneous emission and preserves the coherence of the atomic wave function. This scheme has attractive features as a beam splitter and mirror for atomic interferometry.
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