Fine structure of exciton complexes in high-symmetry quantum dots: Effects of symmetry breaking and symmetry elevation

K. F. Karlsson; M. A. Dupertuis; D. Y. Oberli; E. Pelucchi; A. Rudra; P. O. Holtz; E. Kapon

doi:10.1103/PhysRevB.81.161307

Fine structure of exciton complexes in high-symmetry quantum dots: Effects of symmetry breaking and symmetry elevation

K. F. Karlsson
, M. A. Dupertuis
, D. Y. Oberli
, E. Pelucchi
, A. Rudra
, P. O. Holtz
, E. Kapon

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

Abstract

Quantum dots (QDs) of high symmetry (e.g., C₃v) have degenerate bright exciton states, unlike QDs of C₂v symmetry, making them intrinsically suitable for the generation of entangled photon pairs. Deviations from C₃v symmetry are detected in real QDs by polarization-resolved photoluminescence spectroscopy in side-view geometry of InGaAs/AlGaAs dots formed in tetrahedral pyramids. The theoretical analysis reveals both an additional symmetry plane and weak symmetry breaking, as well as the interplay with electron-hole and hole-hole exchange interactions manifested by the excitonic fine structure.

Original language	English
Article number	161307
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	81
Issue number	16
DOIs	https://doi.org/10.1103/PhysRevB.81.161307
Publication status	Published - 19 Apr 2010
Externally published	Yes

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title = "Fine structure of exciton complexes in high-symmetry quantum dots: Effects of symmetry breaking and symmetry elevation",

abstract = "Quantum dots (QDs) of high symmetry (e.g., C3v) have degenerate bright exciton states, unlike QDs of C2v symmetry, making them intrinsically suitable for the generation of entangled photon pairs. Deviations from C3v symmetry are detected in real QDs by polarization-resolved photoluminescence spectroscopy in side-view geometry of InGaAs/AlGaAs dots formed in tetrahedral pyramids. The theoretical analysis reveals both an additional symmetry plane and weak symmetry breaking, as well as the interplay with electron-hole and hole-hole exchange interactions manifested by the excitonic fine structure.",

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doi = "10.1103/PhysRevB.81.161307",

language = "English",

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T1 - Fine structure of exciton complexes in high-symmetry quantum dots

T2 - Effects of symmetry breaking and symmetry elevation

AU - Karlsson, K. F.

AU - Dupertuis, M. A.

AU - Oberli, D. Y.

AU - Pelucchi, E.

AU - Rudra, A.

AU - Holtz, P. O.

AU - Kapon, E.

PY - 2010/4/19

Y1 - 2010/4/19

N2 - Quantum dots (QDs) of high symmetry (e.g., C3v) have degenerate bright exciton states, unlike QDs of C2v symmetry, making them intrinsically suitable for the generation of entangled photon pairs. Deviations from C3v symmetry are detected in real QDs by polarization-resolved photoluminescence spectroscopy in side-view geometry of InGaAs/AlGaAs dots formed in tetrahedral pyramids. The theoretical analysis reveals both an additional symmetry plane and weak symmetry breaking, as well as the interplay with electron-hole and hole-hole exchange interactions manifested by the excitonic fine structure.

AB - Quantum dots (QDs) of high symmetry (e.g., C3v) have degenerate bright exciton states, unlike QDs of C2v symmetry, making them intrinsically suitable for the generation of entangled photon pairs. Deviations from C3v symmetry are detected in real QDs by polarization-resolved photoluminescence spectroscopy in side-view geometry of InGaAs/AlGaAs dots formed in tetrahedral pyramids. The theoretical analysis reveals both an additional symmetry plane and weak symmetry breaking, as well as the interplay with electron-hole and hole-hole exchange interactions manifested by the excitonic fine structure.

UR - https://www.scopus.com/pages/publications/77954154870

U2 - 10.1103/PhysRevB.81.161307

DO - 10.1103/PhysRevB.81.161307

M3 - Article

AN - SCOPUS:77954154870

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VL - 81

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 16

M1 - 161307

ER -

Fine structure of exciton complexes in high-symmetry quantum dots: Effects of symmetry breaking and symmetry elevation

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