TY - JOUR
T1 - Composed Effects of Electron-Hole Exchange and Near-Field Interaction in Quantum-Dot-Confined Radiative Dipoles
AU - Díaz-Ramírez, Jaime David
AU - Huang, Shiang Yu
AU - Cheng, Bo Long
AU - Lo, Ping Yuan
AU - Cheng, Shun Jen
AU - Ramírez-Gómez, Hanz Yecid
N1 - Publisher Copyright:
© 2023 by the authors.
PY - 2023/9
Y1 - 2023/9
N2 - Conservation of polarization is an important requirement for reliable single-photon emitters, which, in turn, are essential building blocks for light-based quantum information processing. In this work, we study the exciton-spin dynamics in a double quantum dot under the combined effects of electron-hole exchange and Förster resonance energy transfer. By means of numerical solutions of the quantum master equation, we simulate the time-dependent spin polarization for two neighboring dots. According to our results, under some conditions, the depolarization caused by the electron-hole exchange may be slowed by the near field-induced interdot energy transfer, suggesting a new mechanism to extend the exciton coherence time. This opens doors to alternative schemes for improved solid-state quantum light sources.
AB - Conservation of polarization is an important requirement for reliable single-photon emitters, which, in turn, are essential building blocks for light-based quantum information processing. In this work, we study the exciton-spin dynamics in a double quantum dot under the combined effects of electron-hole exchange and Förster resonance energy transfer. By means of numerical solutions of the quantum master equation, we simulate the time-dependent spin polarization for two neighboring dots. According to our results, under some conditions, the depolarization caused by the electron-hole exchange may be slowed by the near field-induced interdot energy transfer, suggesting a new mechanism to extend the exciton coherence time. This opens doors to alternative schemes for improved solid-state quantum light sources.
KW - Förster resonance energy transfer
KW - decoherence
KW - dipole-dipole interaction
KW - electron-hole exchange
KW - fine structure splitting
KW - polarized emission
KW - quantum dots
UR - http://www.scopus.com/inward/record.url?scp=85172881803&partnerID=8YFLogxK
U2 - 10.3390/condmat8030084
DO - 10.3390/condmat8030084
M3 - Article
AN - SCOPUS:85172881803
SN - 2410-3896
VL - 8
JO - Condensed Matter
JF - Condensed Matter
IS - 3
M1 - 84
ER -