Quantum confined Rydberg excitons in Cu2O nanoparticles

Konstantinos Orfanakis; Sai Kiran Rajendran; Hamid Ohadi; Sylwia Zielińska-Raczyńska; Gerard Czajkowski; Karol Karpiński; David Ziemkiewicz

doi:10.1103/PhysRevB.103.245426

Quantum confined Rydberg excitons in Cu₂O nanoparticles

Konstantinos Orfanakis, Sai Kiran Rajendran, Hamid Ohadi^*, Sylwia Zielińska-Raczyńska, Gerard Czajkowski, Karol Karpiński, David Ziemkiewicz

^*Corresponding author for this work

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

Abstract

The quantum confinement of Rydberg excitons is an important step towards exploiting their large nonlinearities for quantum applications. We observe Rydberg excitons in natural nanoparticles of Cu2O. We resolve up to the principal quantum number n=12 in a bulk Cu2O crystal and up to n=6 in nanoparticles extracted from the same crystal. The exciton transitions in nanoparticles are broadened and their oscillator strengths decrease as ∝n−4 compared to those in the bulk (decreasing as ∝n−3). We explain our results by including the effect of quantum confinement of exciton states in the nanoparticles. Our results provide an understanding of the physics of Cu2O Rydberg excitons in confined dimensions.

Original language	English
Article number	245426
Number of pages	6
Journal	Physical Review. B, Condensed matter and materials physics
Volume	103
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.103.245426
Publication status	Published - 21 Jun 2021

Access to Document

10.1103/PhysRevB.103.245426

PhysRevB.103.245426
Copyright © 2021 American Physical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the final published version of the work, which was originally published at https://doi.org/10.1103/PhysRevB.103.245426.
Final published version, 934 KB

Tailored Rydberg Superatoms: Tailored Rydberg Superatoms through Quantum Confinement
Rajendran, S. K. (PI)
Carnegie Trust
1/10/20 → 30/03/21
Project: Standard
Rydberg polaritons in Cu2O microcavities: Rydberg polaritons in Cu2O microcavities
Ohadi, H. (PI)
EPSRC
15/01/19 → 14/01/21
Project: Standard

Quantum confined Rydberg excitons in Cu2O nanoparticles (dataset)
Orfanakis, K. (Creator), Rajendran, S. K. (Creator) & Ohadi, H. (Creator), University of St Andrews, 22 Jun 2021
DOI: 10.17630/633aa0f8-bf54-43e4-ad11-417ef94549d9
Dataset

File

Cite this

@article{78bce47ea9f94aafa24c7c41a09d5808,

title = "Quantum confined Rydberg excitons in Cu2O nanoparticles",

abstract = "The quantum confinement of Rydberg excitons is an important step towards exploiting their large nonlinearities for quantum applications. We observe Rydberg excitons in natural nanoparticles of Cu2O. We resolve up to the principal quantum number n=12 in a bulk Cu2O crystal and up to n=6 in nanoparticles extracted from the same crystal. The exciton transitions in nanoparticles are broadened and their oscillator strengths decrease as ∝n−4 compared to those in the bulk (decreasing as ∝n−3). We explain our results by including the effect of quantum confinement of exciton states in the nanoparticles. Our results provide an understanding of the physics of Cu2O Rydberg excitons in confined dimensions.",

author = "Konstantinos Orfanakis and Rajendran, {Sai Kiran} and Hamid Ohadi and Sylwia Zieli{\'n}ska-Raczy{\'n}ska and Gerard Czajkowski and Karol Karpi{\'n}ski and David Ziemkiewicz",

note = "Funding: UK EPSRC Grant No. EP/S014403/1 and The Royal Society RGS\R2\192174. K.O. acknowledges EPSRC for PhD studentship support through grant no. EP/L015110/1. S.K.R. acknowledges the Carnegie Trust for the Research Incentive Grant RIG009823. ",

year = "2021",

month = jun,

day = "21",

doi = "10.1103/PhysRevB.103.245426",

language = "English",

volume = "103",

journal = "Physical Review. B, Condensed matter and materials physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "24",

}

TY - JOUR

T1 - Quantum confined Rydberg excitons in Cu2O nanoparticles

AU - Orfanakis, Konstantinos

AU - Rajendran, Sai Kiran

AU - Ohadi, Hamid

AU - Zielińska-Raczyńska, Sylwia

AU - Czajkowski, Gerard

AU - Karpiński, Karol

AU - Ziemkiewicz, David

N1 - Funding: UK EPSRC Grant No. EP/S014403/1 and The Royal Society RGS\R2\192174. K.O. acknowledges EPSRC for PhD studentship support through grant no. EP/L015110/1. S.K.R. acknowledges the Carnegie Trust for the Research Incentive Grant RIG009823.

PY - 2021/6/21

Y1 - 2021/6/21

N2 - The quantum confinement of Rydberg excitons is an important step towards exploiting their large nonlinearities for quantum applications. We observe Rydberg excitons in natural nanoparticles of Cu2O. We resolve up to the principal quantum number n=12 in a bulk Cu2O crystal and up to n=6 in nanoparticles extracted from the same crystal. The exciton transitions in nanoparticles are broadened and their oscillator strengths decrease as ∝n−4 compared to those in the bulk (decreasing as ∝n−3). We explain our results by including the effect of quantum confinement of exciton states in the nanoparticles. Our results provide an understanding of the physics of Cu2O Rydberg excitons in confined dimensions.

AB - The quantum confinement of Rydberg excitons is an important step towards exploiting their large nonlinearities for quantum applications. We observe Rydberg excitons in natural nanoparticles of Cu2O. We resolve up to the principal quantum number n=12 in a bulk Cu2O crystal and up to n=6 in nanoparticles extracted from the same crystal. The exciton transitions in nanoparticles are broadened and their oscillator strengths decrease as ∝n−4 compared to those in the bulk (decreasing as ∝n−3). We explain our results by including the effect of quantum confinement of exciton states in the nanoparticles. Our results provide an understanding of the physics of Cu2O Rydberg excitons in confined dimensions.

U2 - 10.1103/PhysRevB.103.245426

DO - 10.1103/PhysRevB.103.245426

M3 - Article

SN - 1098-0121

VL - 103

JO - Physical Review. B, Condensed matter and materials physics

JF - Physical Review. B, Condensed matter and materials physics

IS - 24

M1 - 245426

ER -

Quantum confined Rydberg excitons in Cu2O nanoparticles

Abstract

Access to Document

Fingerprint

Projects

Tailored Rydberg Superatoms: Tailored Rydberg Superatoms through Quantum Confinement

Rydberg polaritons in Cu2O microcavities: Rydberg polaritons in Cu2O microcavities

Datasets

Quantum confined Rydberg excitons in Cu2O nanoparticles (dataset)

Cite this

Quantum confined Rydberg excitons in Cu₂O nanoparticles