Composed Effects of Electron-Hole Exchange and Near-Field Interaction in Quantum-Dot-Confined Radiative Dipoles

Jaime David Díaz-Ramírez; Shiang Yu Huang; Bo Long Cheng; Ping Yuan Lo; Shun Jen Cheng; Hanz Yecid Ramírez-Gómez

doi:10.3390/condmat8030084

Composed Effects of Electron-Hole Exchange and Near-Field Interaction in Quantum-Dot-Confined Radiative Dipoles

Jaime David Díaz-Ramírez, Shiang Yu Huang, Bo Long Cheng, Ping Yuan Lo, Shun Jen Cheng^*, Hanz Yecid Ramírez-Gómez^*

^*Corresponding author for this work

Department of Electrophysics

Research output: Contribution to journal › Article › peer-review

1 Scopus citations

Abstract

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.

Original language	English
Article number	84
Journal	Condensed Matter
Volume	8
Issue number	3
DOIs	https://doi.org/10.3390/condmat8030084
State	Published - Sep 2023

Keywords

Förster resonance energy transfer
decoherence
dipole-dipole interaction
electron-hole exchange
fine structure splitting
polarized emission
quantum dots

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10.3390/condmat8030084

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title = "Composed Effects of Electron-Hole Exchange and Near-Field Interaction in Quantum-Dot-Confined Radiative Dipoles",

abstract = "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 F{\"o}rster 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.",

keywords = "F{\"o}rster resonance energy transfer, decoherence, dipole-dipole interaction, electron-hole exchange, fine structure splitting, polarized emission, quantum dots",

author = "D{\'i}az-Ram{\'i}rez, {Jaime David} and Huang, {Shiang Yu} and Cheng, {Bo Long} and Lo, {Ping Yuan} and Cheng, {Shun Jen} and Ram{\'i}rez-G{\'o}mez, {Hanz Yecid}",

note = "Publisher Copyright: {\textcopyright} 2023 by the authors.",

year = "2023",

month = sep,

doi = "10.3390/condmat8030084",

language = "English",

volume = "8",

journal = "Condensed Matter",

issn = "2410-3896",

publisher = "MDPI AG",

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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

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

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U2 - 10.3390/condmat8030084

DO - 10.3390/condmat8030084

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VL - 8

JO - Condensed Matter

JF - Condensed Matter

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ER -

Composed Effects of Electron-Hole Exchange and Near-Field Interaction in Quantum-Dot-Confined Radiative Dipoles

Abstract

Keywords

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