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  Population inversion in two-level systems possessing permanent dipoles

Macovei, M., Mishra, M., & Keitel, C. H. (2015). Population inversion in two-level systems possessing permanent dipoles. Physical Review A, 92(1): 013846. doi:10.1103/PhysRevA.92.013846.

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1507.02793.pdf (Preprint), 243KB
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Macovei, Mihai1, 2, Author           
Mishra, Mayank1, Author           
Keitel, Christoph H.1, Author           
Affiliations:
1Division Prof. Dr. Christoph H. Keitel, MPI for Nuclear Physics, Max Planck Society, ou_904546              
2Institute of Applied Physics, Academy of Sciences of Moldova, Academiei Strasse 5, MD-2028 Chişinău, Moldova, ou_persistent22              

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Free keywords: Quantum Physics, quant-ph
 MPINP: Research group J. Evers – Division C. H. Keitel
 Abstract: Bare-state population inversion is demonstrated in a two-level system with all dipole matrix elements nonzero. A laser field is resonantly driving the sample whereas a second weaker and lower frequency coherent field additionally pumps it near resonance with the dynamically-Stark-splitted states. Due to existence of differing permanent dipole moments in the excited and ground bare states, quantum coherences among the involved dressed-states are induced leading to inversion in the steady-state. Furthermore, large refractive indices are feasible as well as the determination of the diagonal matrix elements via the absorption or emission spectra. The results apply to available biomolecular, spin or asymmetric quantum dot systems.

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 Dates: 2015-07-27
 Publication Status: Published online
 Pages: 6 pages, 4 figures
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: DOI: 10.1103/PhysRevA.92.013846
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Title: Physical Review A
  Other : Phys. Rev. A
  Other : Physical Review A: Atomic, Molecular, and Optical Physics
Source Genre: Journal
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Publ. Info: New York, NY : American Physical Society
Pages: - Volume / Issue: 92 (1) Sequence Number: 013846 Start / End Page: - Identifier: ISSN: 1050-2947
CoNE: https://pure.mpg.de/cone/journals/resource/954925225012_2