Highly nonlinear dipolar exciton-polaritons in bilayer MoS
2
Highly nonlinear dipolar exciton-polaritons in bilayer MoS
2
Realizing nonlinear optical response in the low photon density limit in solid-state systems has been a long-standing challenge. Semiconductor microcavities in the strong coupling regime hosting exciton-polaritons have emerged as attractive candidates in this context. However, the weak interaction between these quasiparticles has been a hurdle in this quest. Dipolar excitons provide an attractive strategy to overcome this limitation but are often hindered by their weak oscillator strength. The interlayer dipolar excitons in naturally occurring homobilayer MoS2 alleviates this issue owing to their formation via hybridization of interlayer charge transfer exciton with intralayer B exciton. Here we demonstrate the formation of dipolar exciton polaritons in bilayer MoS2 resulting in unprecedented nonlinear interaction strengths. A ten-fold increase in nonlinearity is observed for the interlayer dipolar excitons compared to the conventional A excitons. These highly nonlinear dipolar polaritons will likely be a frontrunner in the quest for solid-state quantum nonlinear devices.
Datta, Biswajit
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Khatoniar, Mandeep
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Deshmukh, Prathmesh
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Thouin, Felix
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Bushati, Rezlind
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De Liberato, Simone
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Cohen, Stephane Kena
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Menon, Vinod M.
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25 October 2022
Datta, Biswajit
90fbe444-5822-46e8-9b0e-f645a32625ed
Khatoniar, Mandeep
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Deshmukh, Prathmesh
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Thouin, Felix
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Bushati, Rezlind
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De Liberato, Simone
5942e45f-3115-4027-8653-a82667ed8473
Cohen, Stephane Kena
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Menon, Vinod M.
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Datta, Biswajit, Khatoniar, Mandeep, Deshmukh, Prathmesh, Thouin, Felix, Bushati, Rezlind, De Liberato, Simone, Cohen, Stephane Kena and Menon, Vinod M.
(2022)
Highly nonlinear dipolar exciton-polaritons in bilayer MoS
2.
Nature Communications, 13 (6341), [6341].
(doi:10.1038/s41467-022-33940-3).
Abstract
Realizing nonlinear optical response in the low photon density limit in solid-state systems has been a long-standing challenge. Semiconductor microcavities in the strong coupling regime hosting exciton-polaritons have emerged as attractive candidates in this context. However, the weak interaction between these quasiparticles has been a hurdle in this quest. Dipolar excitons provide an attractive strategy to overcome this limitation but are often hindered by their weak oscillator strength. The interlayer dipolar excitons in naturally occurring homobilayer MoS2 alleviates this issue owing to their formation via hybridization of interlayer charge transfer exciton with intralayer B exciton. Here we demonstrate the formation of dipolar exciton polaritons in bilayer MoS2 resulting in unprecedented nonlinear interaction strengths. A ten-fold increase in nonlinearity is observed for the interlayer dipolar excitons compared to the conventional A excitons. These highly nonlinear dipolar polaritons will likely be a frontrunner in the quest for solid-state quantum nonlinear devices.
Text
s41467-022-33940-3
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Accepted/In Press date: 7 October 2022
Published date: 25 October 2022
Additional Information:
Funding Information:
We thank Professor Bernhard Urbaszek for helpful discussions. We acknowledge support from ARO through grants W911NF-17-1-0312 and W911NF-22-1-0091; NSF DMR-2011738, and AFOSR-FA2386-21-1-4087. The low temperature spectroscopy facility was supported by NSF MRI grant - DMR-1726573. S.D.L. acknowledges support from a Royal Society Research Fellowship and from the Philip Leverhulme Prize of the Leverhulme Trust.
Publisher Copyright:
© 2022, The Author(s).
Identifiers
Local EPrints ID: 471786
URI: http://eprints.soton.ac.uk/id/eprint/471786
ISSN: 2041-1723
PURE UUID: e293588d-3506-4913-96a2-80dc2cd6cb44
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Date deposited: 18 Nov 2022 17:39
Last modified: 17 Mar 2024 03:31
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Author:
Biswajit Datta
Author:
Mandeep Khatoniar
Author:
Prathmesh Deshmukh
Author:
Felix Thouin
Author:
Rezlind Bushati
Author:
Stephane Kena Cohen
Author:
Vinod M. Menon
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