Coherent Population Trapping in Two-Electron Three-Level Systems with Aligned Spins

TitleCoherent Population Trapping in Two-Electron Three-Level Systems with Aligned Spins
Publication TypeJournal Article
Year of Publication2001
AuthorsMompart, J, Corbalán, R, Roso, L
JournalPhys. Rev. Lett.
Volume88
Pagination023603
Date PublishedDec
Abstract

The possibility of coherent population trapping in two electron states with aligned spins (orthosystem) is evidenced. From the analysis of a three-level atomic system containing two electrons, and driven by the two laser fields needed for coherent population trapping, a conceptually new kind of dark state appears. The properties of this trapping are physically interpreted in terms of a dark hole, instead of a dark two-electron state. This technique, among many other applications, offers the possibility of measuring, with subnatural resolution, some superposition-state matrix elements of the electron-electron correlation that due to their time dependent nature are inaccessible by standard measuring procedures.

URLhttp://link.aps.org/doi/10.1103/PhysRevLett.88.023603
DOI10.1103/PhysRevLett.88.023603
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