Observation of Rydberg exciton polaritons and their condensate in a perovskite cavity
Abstract
Rydberg excitons with high principal value exhibit strong dipole–dipole interactions. However, polaritons with an excitonic constituent that is an excited state, namely Rydberg exciton polaritons (REPs), have not yet been experimentally observed. Here, we observe the formation of REPs in a single crystal CsPbBr 3 perovskite cavity without any external fields. These polaritons exhibit strong nonlinear behavior that leads to a coherent polariton condensate with a prominent blue shift. Furthermore, the REPs in CsPbBr 3 are highly anisotropic and have a large extinction ratio, arising from the perovskite’s orthorhombic crystal structure.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Sep 23, 2019
- Source ID
- 10.1073/pnas.1909948116
Entities
People
- Allan H. MacDonald
- Fan Zheng
- Fei Xue
- Jeongmin Kim
- Lin-Wang Wang
- Mervin Zhao
- Quanwei Li
- Renjie Tao
- Siqi Wang
- Sui Yang
- Wei Bao
- Xiang Zhang
- Xiaoze Liu
- Yang Xia
- Ying Wang
- Yuan Wang
Organizations
- Army Research Office
- Lawrence Berkeley National Laboratory
- National Institute of Standards and Technology
- National Science Foundation
- Office of Naval Research Global
- United States Department of Energy
- University of Hong Kong
- University of Maryland
- University of Texas at Austin