Nonlinear Rydberg exciton-polaritons in Cu<sub>2</sub>O microcavities

Maxim Makhonin; Anthonin Delphan; Kok Wee Song; Paul Walker; Tommi Isoniemi; Peter Claronino; Konstantinos Orfanakis; Sai Kiran Rajendran; Hamid Ohadi; Julian Heckötter; Marc Assmann; Manfred Bayer; Alexander Tartakovskii; Maurice Skolnick; Oleksandr Kyriienko; Dmitry Krizhanovskii

doi:10.1038/s41377-024-01382-9

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Nonlinear Rydberg exciton-polaritons in Cu₂O microcavities

Original Articles

- Nonlinear Rydberg exciton-polaritons in Cu₂O microcavities
- Light: Science & Applications Vol. 13, Issue 4, Pages: 619-627(2024)
- Affiliations：
  
  1.Department of Physics and Astronomy, University of Sheffield, Sheffield S3 7RH, UK
  2.Department of Physics and Astronomy, University of Exeter, Stocker Road, Exeter EX4 4PY, UK
  3.SUPA, School of Physics and Astronomy, University of St Andrews, St Andrews KY16 9SS, UK
  4.Fakultät Physik, TU Dortmund, August-Schmidt-Straße 4, 44227 Dortmund, Germany
- Author bio：
  
  Maxim Makhonin (m.makhonin@sheffield.ac.uk)
- Funds：
- DOI：10.1038/s41377-024-01382-9
  CLC：
- Received：25 August 2023，
  
  Revised：10 January 2024，
  
  Accepted：2024-01-11，
  
  Published Online：06 February 2024，
  
  Published：30 April 2024
- Accepted：
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Makhonin, M. et al. Nonlinear Rydberg exciton-polaritons in Cu₂O microcavities. Light: Science & Applications, 13, 619-627 (2024).
DOI：

Makhonin, M. et al. Nonlinear Rydberg exciton-polaritons in Cu₂O microcavities. Light: Science & Applications, 13, 619-627 (2024). DOI： 10.1038/s41377-024-01382-9.

摘要

Abstract

Rydberg excitons (analogues of Rydberg atoms in condensed matter systems) are highly excited bound electron-hole states with large Bohr radii. The interaction betwee

n them as well as exciton coupling to light may lead to strong optical nonlinearity

with applications in sensing and quantum information processing. Here

we achieve strong effective photon–photon interactions (Kerr-like optical nonlinearity) via the Rydberg blockade phenomenon and the hybridisation of excitons and photons forming polaritons in a Cu2O-filled microresonator. Under pulsed resonant excitation polariton resonance frequencies are renormalised due to the reduction of the photon-exciton coupling with increasing exciton density. Theoretical analysis shows that the Rydberg blockade plays a major role in the experimentally observed scaling of the polariton nonlinearity coefficient as ∝

4.4±1.8

for principal quantum numbers up to

= 7. Such high principal quantum numbers studied in a polariton system for the first time are essential for realisation of high Rydberg optical nonlinearities

which paves the way towards quantum optical applications and fundamental studies of strongly correlated photonic (polaritonic) states in a solid state system.

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references

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Nonlinear Rydberg exciton-polaritons in Cu2O microcavities

DOI：10.1038/s41377-024-01382-9

摘要

Abstract

关键词

Keywords

references

Nonlinear Rydberg exciton-polaritons in Cu₂O microcavities