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Controlling Exciton-Phonon Interactions via Electromagnetically Induced Transparency

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Controlling Exciton-Phonon Interactions via Electromagnetically Induced Transparency. / Walther, V.; Grünwald, P.; Pohl, T.

In: Physical Review Letters, Vol. 125, No. 17, 173601, 10.2020.

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Walther, V. ; Grünwald, P. ; Pohl, T. / Controlling Exciton-Phonon Interactions via Electromagnetically Induced Transparency. In: Physical Review Letters. 2020 ; Vol. 125, No. 17.

Bibtex

@article{b0553cca8edf46d196d021dab8c05bf4,
title = "Controlling Exciton-Phonon Interactions via Electromagnetically Induced Transparency",
abstract = "Highly excited Rydberg states of excitons in Cu2O semiconductors provide a promising approach to explore and control strong particle interactions in a solid-state environment. A major obstacle has been the substantial absorption background that stems from exciton-phonon coupling and lies under the Rydberg excitation spectrum, weakening the effects of exciton interactions. Here, we demonstrate that two-photon excitation of Rydberg excitons under conditions of electromagnetically induced transparency (EIT) can be used to control this background. Based on a microscopic theory that describes the known single-photon absorption spectrum, we analyze the conditions under which two-photon EIT permits separating the optical Rydberg excitation from the phonon-induced absorption background, and even suppressing it entir7ely. Our findings thereby pave the way for the exploitation of Rydberg blockade with Cu2O excitons in nonlinear optics and other applications. ",
author = "V. Walther and P. Gr{\"u}nwald and T. Pohl",
year = "2020",
month = oct,
doi = "10.1103/PhysRevLett.125.173601",
language = "English",
volume = "125",
journal = "Physical Review Letters",
issn = "0031-9007",
publisher = "AMER PHYSICAL SOC",
number = "17",

}

RIS

TY - JOUR

T1 - Controlling Exciton-Phonon Interactions via Electromagnetically Induced Transparency

AU - Walther, V.

AU - Grünwald, P.

AU - Pohl, T.

PY - 2020/10

Y1 - 2020/10

N2 - Highly excited Rydberg states of excitons in Cu2O semiconductors provide a promising approach to explore and control strong particle interactions in a solid-state environment. A major obstacle has been the substantial absorption background that stems from exciton-phonon coupling and lies under the Rydberg excitation spectrum, weakening the effects of exciton interactions. Here, we demonstrate that two-photon excitation of Rydberg excitons under conditions of electromagnetically induced transparency (EIT) can be used to control this background. Based on a microscopic theory that describes the known single-photon absorption spectrum, we analyze the conditions under which two-photon EIT permits separating the optical Rydberg excitation from the phonon-induced absorption background, and even suppressing it entir7ely. Our findings thereby pave the way for the exploitation of Rydberg blockade with Cu2O excitons in nonlinear optics and other applications.

AB - Highly excited Rydberg states of excitons in Cu2O semiconductors provide a promising approach to explore and control strong particle interactions in a solid-state environment. A major obstacle has been the substantial absorption background that stems from exciton-phonon coupling and lies under the Rydberg excitation spectrum, weakening the effects of exciton interactions. Here, we demonstrate that two-photon excitation of Rydberg excitons under conditions of electromagnetically induced transparency (EIT) can be used to control this background. Based on a microscopic theory that describes the known single-photon absorption spectrum, we analyze the conditions under which two-photon EIT permits separating the optical Rydberg excitation from the phonon-induced absorption background, and even suppressing it entir7ely. Our findings thereby pave the way for the exploitation of Rydberg blockade with Cu2O excitons in nonlinear optics and other applications.

UR - http://www.scopus.com/inward/record.url?scp=85093940938&partnerID=8YFLogxK

U2 - 10.1103/PhysRevLett.125.173601

DO - 10.1103/PhysRevLett.125.173601

M3 - Journal article

C2 - 33156663

AN - SCOPUS:85093940938

VL - 125

JO - Physical Review Letters

JF - Physical Review Letters

SN - 0031-9007

IS - 17

M1 - 173601

ER -