Coupling N identical emitters to the same field mode is a well-established method to enhance light-matter interaction. However, the resulting √N boost of the coupling strength comes at the cost of a “linearized” (effectively semiclassical) dynamics. Here, we instead demonstrate a new approach for enhancing the coupling constant of a single quantum emitter, while retaining the nonlinear character of the light-matter interaction. We consider a single quantum emitter with N nearly degenerate transitions that are collectively coupled to the same field mode. We show that in such conditions an effective Jaynes-Cummings model emerges with a boosted coupling constant of order √N. The validity and consequences of our general conclusions are analytically demonstrated for the instructive case N=2. We further observe that our system can closely match the spectral line shapes and photon autocorrelation functions typical of Jaynes-Cummings physics, proving that quantum optical nonlinearities are retained. Our findings match up very well with recent broadband plasmonic nanoresonator strong-coupling experiments and will, therefore, facilitate the control and detection of single-photon nonlinearities at ambient conditions.
%0 Journal Article
%1 tufarelli2020dicke
%A Tufarelli, Tommaso
%A Friedrich, Daniel
%A Groß, Heiko
%A Hamm, Joachim
%A Hess, Ortwin
%A Hecht, Bert
%D 2021
%J Phys. Rev. Research
%K light-matter-interaction multilevel nano-optics strong-coupling theory
%R 10.1103/PhysRevResearch.3.033103
%T Single quantum emitter Dicke enhancement
%U https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.3.033103
%X Coupling N identical emitters to the same field mode is a well-established method to enhance light-matter interaction. However, the resulting √N boost of the coupling strength comes at the cost of a “linearized” (effectively semiclassical) dynamics. Here, we instead demonstrate a new approach for enhancing the coupling constant of a single quantum emitter, while retaining the nonlinear character of the light-matter interaction. We consider a single quantum emitter with N nearly degenerate transitions that are collectively coupled to the same field mode. We show that in such conditions an effective Jaynes-Cummings model emerges with a boosted coupling constant of order √N. The validity and consequences of our general conclusions are analytically demonstrated for the instructive case N=2. We further observe that our system can closely match the spectral line shapes and photon autocorrelation functions typical of Jaynes-Cummings physics, proving that quantum optical nonlinearities are retained. Our findings match up very well with recent broadband plasmonic nanoresonator strong-coupling experiments and will, therefore, facilitate the control and detection of single-photon nonlinearities at ambient conditions.
@article{tufarelli2020dicke,
abstract = {Coupling N identical emitters to the same field mode is a well-established method to enhance light-matter interaction. However, the resulting √N boost of the coupling strength comes at the cost of a “linearized” (effectively semiclassical) dynamics. Here, we instead demonstrate a new approach for enhancing the coupling constant of a single quantum emitter, while retaining the nonlinear character of the light-matter interaction. We consider a single quantum emitter with N nearly degenerate transitions that are collectively coupled to the same field mode. We show that in such conditions an effective Jaynes-Cummings model emerges with a boosted coupling constant of order √N. The validity and consequences of our general conclusions are analytically demonstrated for the instructive case N=2. We further observe that our system can closely match the spectral line shapes and photon autocorrelation functions typical of Jaynes-Cummings physics, proving that quantum optical nonlinearities are retained. Our findings match up very well with recent broadband plasmonic nanoresonator strong-coupling experiments and will, therefore, facilitate the control and detection of single-photon nonlinearities at ambient conditions.},
added-at = {2020-10-27T10:28:44.000+0100},
author = {Tufarelli, Tommaso and Friedrich, Daniel and Groß, Heiko and Hamm, Joachim and Hess, Ortwin and Hecht, Bert},
biburl = {https://www.bibsonomy.org/bibtex/2782e6e2217959730483b2ec5305d86f2/ep5optics},
doi = {10.1103/PhysRevResearch.3.033103},
interhash = {53237a77b949208fadc790996ac1c407},
intrahash = {782e6e2217959730483b2ec5305d86f2},
journal = {Phys. Rev. Research},
keywords = {light-matter-interaction multilevel nano-optics strong-coupling theory},
month = {07},
note = {<a href="https://arxiv.org/abs/2010.12585v2" style="font-style: normal;">» arXiv: 2010.12585v2 (2021)</a>.},
timestamp = {2021-08-02T13:10:43.000+0200},
title = {Single quantum emitter Dicke enhancement},
url = {https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.3.033103},
year = 2021
}