Phase control in a coherent superposition of degenerate quantum states through frequency control
Autor: | Leonid P. Yatsenko, Ulrich Schneider, Frank Vewinger, Klaas Bergmann, Manfred Heinz |
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Rok vydání: | 2006 |
Předmět: |
Physics
education.field_of_study business.industry Degenerate energy levels Population Stimulated Raman adiabatic passage chemistry.chemical_element Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Neon Superposition principle Dark state Optics chemistry Electrical and Electronic Engineering Physical and Theoretical Chemistry Atomic physics Adiabatic process Ground state education business |
Zdroj: | Optics Communications. 264:248-255 |
ISSN: | 0030-4018 |
Popis: | We demonstrate a controlled phase change of p in a degenerate superposition by altering a laser frequency by only 10 MHz. The method relies on the preparation of an adiabatic state involving the M = ±2 and M = 0 states of the 3 P2 (J = 2) level of metastable neon. Dependent on the frequency, the preparation proceeds either by stimulated Raman adiabatic passage (STIRAP) or by coherent population trapping (CPT). In the former case the superposition is prepared by adiabatic transfer induced in an extended tripod linkage scheme. In the latter case population is optically pumped into the Zeeman manifold of the level 3 P2. The population which does not reach a dark state decays to the ground state of neon. The amplitudes and relative phases of the dark states differ for the two cases. The phase change is monitored using the method of phase-to-population mapping. 2006 Elsevier B.V. All rights reserved. |
Databáze: | OpenAIRE |
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