2010/07/16 by Ch. Simon, C. -M. Simon, T. Belhadj +13
Physics and Astronomy · #Adiabatic process #Atomic physics #Coherence (philosophical gambling strategy) #Condensed matter physics #Dipole #Excitation #Excited state #Exciton #Ground state #Laser #Optics #Optoelectronics #Physics #Population #Population inversion #Quantum #Quantum and electron transport phenomena #Quantum dot #Quantum dot laser #Quantum mechanics #Quantum optics and atomic interactions #Rabi cycle #Rabi frequency #Semiconductor Quantum Structures and Devices #Semiconductor laser theory #cond-mat.mes-hall #quant-ph
paper · pdf · doi:10.1103/physrevlett.106.166801
published as Phys. Rev. Lett. 106, 166801 (2011) · Poster at conference QD2010 Nottingham, UK (26.-30. April 2010)
arxiv created 2010/07/16 · openalex publication_date 2011/04/18 · arxiv updated 2015/05/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The energy states in semiconductor quantum dots are discrete as in atoms, and quantum states can be coherently controlled with resonant laser pulses. Long coherence times allow the observation of Rabi flopping of a single dipole transition in a solid state device, for which occupancy of the upper state depends sensitively on the dipole moment and the excitation laser power. We report on the robust population inversion in a single quantum dot using an optical technique that exploits rapid adiabatic passage from the ground to an excited state through excitation with laser pulses whose frequency is swept through the resonance. This observation in photoluminescence experiments is made possible by introducing a novel optical detection scheme for the resonant electron hole pair (exciton) generation.