Strong spin-orbit coupling inducing Autler-Townes effect in lead halide perovskite nanocrystals

Go Yumoto, Hideki Hirori, Fumiya Sekiguchi, Ryota Sato, Masaki Saruyama, Toshiharu Teranishi and Yoshihiko Kanemitsu ()
Additional contact information
Go Yumoto: Institute for Chemical Research, Kyoto University
Hideki Hirori: Institute for Chemical Research, Kyoto University
Fumiya Sekiguchi: Institute for Chemical Research, Kyoto University
Ryota Sato: Institute for Chemical Research, Kyoto University
Masaki Saruyama: Institute for Chemical Research, Kyoto University
Toshiharu Teranishi: Institute for Chemical Research, Kyoto University
Yoshihiko Kanemitsu: Institute for Chemical Research, Kyoto University

Nature Communications, 2021, vol. 12, issue 1, 1-7

Abstract: Abstract Manipulation of excitons via coherent light-matter interaction is a promising approach for quantum state engineering and ultrafast optical modulation. Various excitation pathways in the excitonic multilevel systems provide controllability more efficient than that in the two-level system. However, these control schemes have been restricted to limited control-light wavelengths and cryogenic temperatures. Here, we report that lead halide perovskites can lift these restrictions owing to their multiband structure induced by strong spin-orbit coupling. Using CsPbBr3 perovskite nanocrystals, we observe an anomalous enhancement of the exciton energy shift at room temperature with increasing control-light wavelength from the visible to near-infrared region. The enhancement occurs because the interconduction band transitions between spin-orbit split states have large dipole moments and induce a crossover from the two-level optical Stark effect to the three-level Autler-Townes effect. Our finding establishes a basis for efficient coherent optical manipulation of excitons utilizing energy states with large spin-orbit splitting.

Date: 2021
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/s41467-021-23291-w Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-23291-w

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/s41467-021-23291-w

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().