Abstract
We report systematic measurements of photoluminescence excitation spectra and dephasing times (formula presented) on various excited states of hundreds of individual quantum dots (QDs). From the variation of (formula presented) with the energy separation between excited states and the ground state (formula presented) we identified two distinct regions of (formula presented) where LO phonon emission and hole relaxation via LA phonon emission play as dominat dephasing mechanisms. We also found a clear evidence of significantly slow energy relaxation in the (formula presented) range where these phonon emission processes are suppressed due to the reduction of interaction phase space.
| Original language | English |
|---|---|
| Journal | Physical Review B - Condensed Matter and Materials Physics |
| Volume | 63 |
| Issue number | 24 |
| DOIs | |
| Publication status | Published - 2001 Jan 1 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
Cite this
Carrier relaxation and quantum decoherence of excited states in self-assembled quantum dots. / Holmes, A. L.; Htoon, H.; Shih, C. K.; Kulik, D.; Baklenov, O.; Takagahara, Toshihide.
In: Physical Review B - Condensed Matter and Materials Physics, Vol. 63, No. 24, 01.01.2001.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Carrier relaxation and quantum decoherence of excited states in self-assembled quantum dots
AU - Holmes, A. L.
AU - Htoon, H.
AU - Shih, C. K.
AU - Kulik, D.
AU - Baklenov, O.
AU - Takagahara, Toshihide
PY - 2001/1/1
Y1 - 2001/1/1
N2 - We report systematic measurements of photoluminescence excitation spectra and dephasing times (formula presented) on various excited states of hundreds of individual quantum dots (QDs). From the variation of (formula presented) with the energy separation between excited states and the ground state (formula presented) we identified two distinct regions of (formula presented) where LO phonon emission and hole relaxation via LA phonon emission play as dominat dephasing mechanisms. We also found a clear evidence of significantly slow energy relaxation in the (formula presented) range where these phonon emission processes are suppressed due to the reduction of interaction phase space.
AB - We report systematic measurements of photoluminescence excitation spectra and dephasing times (formula presented) on various excited states of hundreds of individual quantum dots (QDs). From the variation of (formula presented) with the energy separation between excited states and the ground state (formula presented) we identified two distinct regions of (formula presented) where LO phonon emission and hole relaxation via LA phonon emission play as dominat dephasing mechanisms. We also found a clear evidence of significantly slow energy relaxation in the (formula presented) range where these phonon emission processes are suppressed due to the reduction of interaction phase space.
UR - http://www.scopus.com/inward/record.url?scp=85038311603&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85038311603&partnerID=8YFLogxK
U2 - 10.1103/PhysRevB.63.241303
DO - 10.1103/PhysRevB.63.241303
M3 - Article
AN - SCOPUS:85038311603
VL - 63
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 24
ER -