RT Journal Article
T1 Absorption of a weak probe in singly charged n-doped quantum dots in the Voigt geometry
A1 Carreño Sánchez, Fernando
A1 Antón Revilla, Miguel Ángel
AB We analyze the absorption of a weak probe field in singly charged n-doped quantum dots in the presence of an external magnetic field in the Voigt geometry. The dots are modeled as double lambda systems. A laser field pumps two of the four active transitions while a probe field is applied along the two undriven transitions. It is shown that for both on resonance and out of resonance driving gain (without inversion) is obtained at two sidebands of the dressed QDs. We found that the peak value of gain can be maximized by a proper selection of both the external magnetic field and the Rabi frequency of the pump field for out of resonance driving. We also show that the coherent driving in combination with above-band excitation allows one to turn the absorption peaks into gain (with inversion) in the whole spectral range.
PB IOP Publishing
SN 1054-660X
YR 2019
FD 2019-01-04
LK https://hdl.handle.net/20.500.14352/13237
UL https://hdl.handle.net/20.500.14352/13237
LA eng
NO Received 4 December 2017Accepted 1 December 2018Published 4 January 2019
NO Ministerio de Ciencia e Innovación (MICINN)
NO Universidad Complutense de Madrid/Banco de Santander
NO Ministerio de Educación, Cultura y Deporte (MECD)
DS Docta Complutense
RD 15 may 2024