Enhancement of Parametric Effects in Polariton Waveguides Induced by Dipolar Interactions
Journal Article
·
· Physical Review Letters
- Consiglio Nazionale delle Ricerche (CNR), Lecce (Italy). CNR NANOTEC, Institute of Nanotechnology; Univ. del Salento, Lecce (Italy). Dipartimento di Fisica
- Univ. del Salento, Lecce (Italy). Dipartimento di Fisica; Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Molecular Foundry
- Consiglio Nazionale delle Ricerche (CNR), Lecce (Italy). CNR NANOTEC, Institute of Nanotechnology
- Consiglio Nazionale delle Ricerche (CNR), Lecce (Italy). CNR NANOTEC, Institute of Nanotechnology; Istituto Nazionale di Fisica Nucleare (INFN), Lecce (Italy)
- Princeton Univ., NJ (United States). PRISM, Princeton Institute for the Science and Technology of Materials
Exciton-polaritons are hybrid light-matter excitations arising from the nonperturbative coupling of a photonic mode and an excitonic resonance. Behaving as interacting photons, they show optical third-order nonlinearities providing effects such as optical parametric oscillation or amplification. It has been suggested that polariton-polariton interactions can be greatly enhanced by inducing aligned electric dipoles in their excitonic part. However, direct evidence of a true particle-particle interaction, such as superfluidity or parametric scattering, is still missing. In this Letter, we demonstrate that dipolar interactions can be used to enhance parametric effects such as self-phase modulation in waveguide polaritons. By quantifying these optical nonlinearities, we provide a reliable experimental measurement of the direct dipolar enhancement of polariton-polariton interactions.
- Research Organization:
- Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); Gordon and Betty Moore Foundations EPiQS Initiative; National Science Foundation (NSF)
- Grant/Contract Number:
- AC02-05CH11231
- OSTI ID:
- 1822406
- Journal Information:
- Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 13 Vol. 126; ISSN 0031-9007
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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