Abstract
By combined pulsed auto- and cross-correlation measurements (4 K) on individual self-assembled CdSe quantum dots, besides triggered single photon emission promising for high repetition frequencies, in particular the generation of time-correlated photon pairs from the sequential radiative biexciton-exciton decay is demonstrated. For the photon pairs a strong collinear polarization degree up to 84.5% was observed which is related to an exciton fine-structure splitting. Together with the measured exciton lifetime an estimate for the relaxation time (≥480 ps) between the fine-structure levels is given.
| Original language | English |
|---|---|
| Pages (from-to) | 607-614 |
| Number of pages | 8 |
| Journal | Physica Status Solidi (B) Basic Research |
| Volume | 238 |
| Issue number | 3 |
| DOIs | |
| State | Published - Aug 2003 |
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