Coherent population trapping in two-electron three-level systems with aligned spins
Mompart Penina, Jordi (Universitat Autònoma de Barcelona. Departament de Física)
Corbalán, R. (Ramón) (Universitat Autònoma de Barcelona. Departament de Física)
Roso, Luis (Universidad de Salamanca. Departamento de Física Aplicada)
American Physical Society

Data:	2002
Resum:	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.
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; Versió publicada
Publicat a:	Physical review letters, Vol. 88, Issue 2 (December 2001) , p. 023603, ISSN 1079-7114

DOI: 10.1103/PhysRevLett.88.023603
DOI: 10.1103/PhysRevLett.88.020601

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