Room-temperature plexcitonic strong coupling: Ultrafast dynamics for quantum applications

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Room-temperature plexcitonic strong coupling: Ultrafast dynamics for quantum applications
Title:
Room-temperature plexcitonic strong coupling: Ultrafast dynamics for quantum applications
Journal Title:
Applied Physics Letters
Publication Date:
01 April 2021
Citation:
Xiong, X., Kongsuwan, N., Lai, Y., Png, C. E., Wu, L., & Hess, O. (2021). Room-temperature plexcitonic strong coupling: Ultrafast dynamics for quantum applications. Applied Physics Letters, 118(13), 130501. doi:10.1063/5.0032013
Abstract:
Strong light–matter interaction is at the heart of modern quantum technological applications and is the basis for a wide range of rich optical phenomena. Coupling a single quantum emitter strongly with electromagnetic fields provides an unprecedented control over its quantum states and enables high-fidelity quantum operations. However, single-emitter strong coupling is exceptionally fragile and has been realized mostly at cryogenic temperatures. Recent experiments have, however, demonstrated that single-emitter strong coupling can be realized at room temperature by using plasmonic nanocavities that confine optical fields via surface plasmons strongly on metal surfaces and facilitate sub-picosecond light–matter interaction. Here, we outline recent theoretical developments and experimental demonstrations of roomtemperature strong coupling in the plasmonic platform, from emitter ensembles down to the single emitter limit, before placing a focus on selective studies that explore and provide insight into applications of plexcitonic strong coupling including sensing of single biological molecules, qubit entanglement generation, and reconfigurable single-photon sources and provide an outline of research directions in quantum sensing, quantum information processing, and ultrafast spectroscopy.
License type:
Attribution 4.0 International (CC BY 4.0)
Funding Info:
This research / project is supported by the National Research Foundation Singapore - NRF-NSFC 2nd Joint Grant Call
Grant Reference no. : NRF2017-NRF-NSFC002-015
Description:
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in (citation of published article) and may be found at http://dx.doi.org/10.1063/5.0032013
ISSN:
1077-3118
0003-6951