TY - JOUR
T1 - Generation of strongly polarization-correlated photon pairs by cascaded emission from individual CdSe/ZnSe quantum dots
AU - Ulrich, S. M.
AU - Strauf, S.
AU - Michler, P.
AU - Bacher, G.
AU - Forchel, A.
PY - 2003/8
Y1 - 2003/8
N2 - 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.
AB - 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.
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U2 - 10.1002/pssb.200303185
DO - 10.1002/pssb.200303185
M3 - Article
AN - SCOPUS:0042828925
SN - 0370-1972
VL - 238
SP - 607
EP - 614
JO - Physica Status Solidi (B) Basic Research
JF - Physica Status Solidi (B) Basic Research
IS - 3
ER -