TY - JOUR
T1 - Single-photon and photon-pair emission from CdSe/Zn(S,Se) quantum dots
AU - Strauf, S.
AU - Ulrich, S. M.
AU - Sebald, K.
AU - Michler, P.
AU - Passow, T.
AU - Hommel, D.
AU - Bacher, G.
AU - Forchel, A.
PY - 2003/7
Y1 - 2003/7
N2 - We report on the generation of triggered single photons and photon pairs relying on pulsed optical excitation of epitaxially grown self-assembled CdSe quantum dots (QDs). Single-photon emission is studied on individual CdSe/Zn(S,Se) QDs for temperatures up to 200 K. At low temperatures nearly perfect single-photon emission is achieved whereas at higher temperatures an increasing multi-photon emission probability due to spectrally overlapping acoustic phonon sidebands of neighboring QDs is observed. The multi-photon emission probability of a bare QD (background subtracted) is strongly suppressed. Further-more, the polarization cross correlation of the biexciton - exciton cascade has been investigated in a CdSe/ZnSe QD at low temperatures. A strong polarization correlation of the emitted photon pairs of ∼74% is observed in a linear detection basis.
AB - We report on the generation of triggered single photons and photon pairs relying on pulsed optical excitation of epitaxially grown self-assembled CdSe quantum dots (QDs). Single-photon emission is studied on individual CdSe/Zn(S,Se) QDs for temperatures up to 200 K. At low temperatures nearly perfect single-photon emission is achieved whereas at higher temperatures an increasing multi-photon emission probability due to spectrally overlapping acoustic phonon sidebands of neighboring QDs is observed. The multi-photon emission probability of a bare QD (background subtracted) is strongly suppressed. Further-more, the polarization cross correlation of the biexciton - exciton cascade has been investigated in a CdSe/ZnSe QD at low temperatures. A strong polarization correlation of the emitted photon pairs of ∼74% is observed in a linear detection basis.
UR - http://www.scopus.com/inward/record.url?scp=0041912928&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0041912928&partnerID=8YFLogxK
U2 - 10.1002/pssb.200303060
DO - 10.1002/pssb.200303060
M3 - Article
AN - SCOPUS:0041912928
SN - 0370-1972
VL - 238
SP - 321
EP - 324
JO - Physica Status Solidi (B) Basic Research
JF - Physica Status Solidi (B) Basic Research
IS - 2
ER -