Science - USA (2020-01-17)

Our experiments demonstrate that quasi-BIC
engineering for individual nanoparticles in
the optical frequency range is feasible despite
fabrication tolerances and material absorp-
tion. Individual high-Q nanoresonators with
a subwavelength footprint promise specific
applications as nonlinear nanoantennas, low-
threshold nanolasers, and compact quantum
sources.

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ACKNOWLEDGMENTS

We thank K. Ladutenko, B. Luther-Davies, D. Smirnova, and

L. Wang for their valuable inputs into this project at various

stages of its development.Funding:This work was supported

bytheAustralianResearchCouncil, the Strategic Fund of the

Australian National University, the National Research Foundation

of Korea (NRF) under grant no. 2018R1A3A3000666 funded

by the Korean Government (MSIT), and the Russian Science

Foundation under grant no. 18-72-10140. K.K. and A.B.

acknowledge support from the Foundation for the Advancement

of Theoretical Physics and Mathematics“BASIS.”Author

contributions:K.K., S.K., and Y.K. conceived the research;

K.K. and A.B. performed theoretical analysis, numerical

simulations, and data analysis; J.-H.C. and H.-G.P. fabricated

the samples; S.K. and E.M.-G. conducted experimental studies;

K.K., S.K., and Y.K. wrote the manuscript based on input

from all authors.Competing interests:The authors declare

no competing interests.Data and materials availability:

All data needed to evaluate the conclusions in this paper are

available in the main text or the supplementary materials.

SUPPLEMENTARY MATERIALS

science.sciencemag.org/content/367/6475/288/suppl/DC1

Materials and Methods

Supplementary Text

Figs. S1 to S15

Table S1

References ( 31 – 43 )

5 September 2019; accepted 27 November 2019

10.1126/science.aaz3985

Koshelevet al.,Science 367 , 288–292 (2020) 17 January 2020 5of5

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