Coherent injecting, extracting, and velocity filtering of neutral atoms in a ring trap via spatial adiabatic passage

Yury Loiko, Veronica Ahufinger, Ricard Menchon-Enrich, Gerhard Birkl, Jordi Mompart

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Abstract

© 2014 EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg. We introduce a coherent technique to inject, extract, and velocity filter neutral atoms in a ring trap coupled via tunneling to two additional waveguides. By adiabatically following the transverse spatial dark state, the proposed technique allows for an efficient and robust velocity dependent atomic population transfer between the ring and the input/output waveguides. We have derived explicit conditions for the spatial adiabatic passage that depend on the atomic velocity along the input waveguide as well as on the initial population distribution among the transverse vibrational states. The validity of our proposal has been checked by numerical integration of the corresponding two-dimensional Schrödinger equation with state-of-the-art parameter values for 87Rb atoms and an optical dipole ring trap.
Original languageEnglish
Article number147
JournalEuropean Physical Journal D
Volume68
DOIs
Publication statusPublished - 1 Jun 2014

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