2001/09/19 by I. Shtrichman, C. Metzner, Claus Metzner +5 · 1 citation
Materials Science · Physics and Astronomy · #Atomic physics #Biexciton #Charge (physics) #Condensed matter physics #Coupling (piping) #Electric field #Electro-absorption modulator #Excited state #Exciton #Field (mathematics) #Materials science #Molecular physics #Optoelectronics #Photoluminescence #Physics #Quantum Dots Synthesis And Properties #Quantum and electron transport phenomena #Quantum dot #Quantum dot laser #Quantum mechanics #Semiconductor #Semiconductor Quantum Structures and Devices #Semiconductor laser theory #Spectral line #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.65.081303
8 pages, 5 figures
arxiv created 2001/09/19 · openalex publication_date 2002/02/05 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We study the electronic coupling between two vertically stacked InAs quantum dots, which are embedded in the center of a n\ensuremath-i\ensuremath-n structure. We use a microphotoluminescence setup to optically isolate a single quantum dot pair and measure the time-averaged photoluminescence under an applied vertical electric field. We find that field tunable coupling between excited states of the two quantum dots leads to charge transfer from one dot to the other. We model the spectra including simultaneously the field-dependent charge transfer and exciton capture rates, and the many-body spectra of the quantum dot molecule for different carrier configurations.