All-Optical Coherent Lifting of Spin-Degeneracy in CsPbBr3 Nanocrystals

Megha Shrivastava; Franziska Krieg; Franziska Krieg; Maryna I Bodnarchuk; Maryna I Bodnarchuk; Maksym Kovalenko; Maksym Kovalenko; K. V. Adarsh

doi:10.1364/CLEO_AT.2021.JW1A.91

Conference on Lasers and Electro-Optics
OSA Technical Digest (Optica Publishing Group, 2021),
paper JW1A.91
•https://doi.org/10.1364/CLEO_AT.2021.JW1A.91

All-Optical Coherent Lifting of Spin-Degeneracy in CsPbBr₃ Nanocrystals

Megha Shrivastava, Franziska Krieg, Maryna I Bodnarchuk, Maksym Kovalenko, and K. V. Adarsh

CLEO: Science and Innovations 2021

San Jose, California United States
9–14 May 2021
ISBN: 978-1-943580-91-0

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Joint Poster Session II (JW1A)

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M. Shrivastava, F. Krieg, M. I. Bodnarchuk, M. Kovalenko, and K. V. Adarsh, "All-Optical Coherent Lifting of Spin-Degeneracy in CsPbBr3 Nanocrystals," in Conference on Lasers and Electro-Optics, J. Kang, S. Tomasulo, I. Ilev, D. Müller, N. Litchinitser, S. Polyakov, V. Podolskiy, J. Nunn, C. Dorrer, T. Fortier, Q. Gan, and C. Saraceno, eds., OSA Technical Digest (Optica Publishing Group, 2021), paper JW1A.91.

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Abstract

We coherently lift the spin-degeneracy in CsPbBr₃ nanocrystals by breaking time-reversal symmetry all-optically without external magnetic field. Huge polarization-selective lifting ~50meV observed, corresponding to Rabi energy >100meV, is highest ever reported in semiconductors at room-temperature.

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