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Non-Hermitian dispersion sign reversal of radiative resonances in two dimensions

https://doi.org/10.1103/PhysRevB.109.125301

Binder, R. ; Schaibley, J. R. ; Kwong, N. H. ( March 2024 , Physical Review B)

Free, publicly-accessible full text available March 1, 2025
Gapless fluctuations and exceptional points in semiconductor lasers

https://doi.org/10.1103/PhysRevB.109.045306

Kwong, N. H. ; Spotnitz, M. Em. ; Binder, R. ( January 2024 , Physical Review B)

Semiconductor lasers have formal analogies to Bardeen-Cooper-Schrieffer (BCS) superconductors. This work shows that, in analogy to gapless superconductivity, a gapless lasing parametric regime, in which the frequency gap in the fluctuation spectrum is closed, exists for steady-state semiconductor lasers. The gap opens when the laser intensity exceeds a threshold. This gapless-to-gapped transition occurs at a third-order exceptional point.
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Free, publicly-accessible full text available January 23, 2025
Collective terahertz fluctuation modes in a polariton laser

https://doi.org/10.1103/PhysRevB.107.125309

Spotnitz, M. Em. ; Kwong, N. H. ; Binder, R. ( March 2023 , Physical Review B)

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Effect of intravalley and intervalley electron-hole exchange on the nonlinear optical response of monolayer MoSe2

https://doi.org/10.1103/PhysRevB.104.245434

Kwong, N. H. ; Schaibley, J. R. ; Binder, R. ( December 2021 , Physical Review B)

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Terahertz spectroscopy of semiconductor microcavity lasers: Photon lasers

https://doi.org/10.1103/PhysRevB.104.115305

Spotnitz, M. ; Kwong, N. H. ; Binder, R. ( September 2021 , Physical Review B)

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Metamorphosis of Goldstone and soft fluctuation modes in polariton lasers

https://doi.org/10.1103/PhysRevB.103.085304

Binder, R. ; Kwong, N. H. ( February 2021 , Physical Review B)
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Optically Controlled Orbital Angular Momentum Generation in a Polaritonic Quantum Fluid

https://doi.org/10.1103/PhysRevLett.119.113903

Luk, S. M. ; Kwong, N. H. ; Lewandowski, P. ; Schumacher, S. ; Binder, R. ( September 2017 , Physical Review Letters)
Directional optical switching and transistor functionality using optical parametric oscillation in a spinor polariton fluid

https://doi.org/10.1364/OE.25.031056

Lewandowski, Przemyslaw ; Luk, Samuel M. H. ; Chan, Chris K. P. ; Leung, P. T. ; Kwong, N. H. ; Binder, Rolf ; Schumacher, Stefan ( November 2017 , Optics Express)
Theory of optically controlled anisotropic polariton transport in semiconductor double microcavities

https://doi.org/10.1364/JOSAB.35.000146

Luk, Samuel M. H. ; Lewandowski, P. ; Kwong, N. H. ; Baudin, E. ; Lafont, O. ; Tignon, J. ; Leung, P. T. ; Chan, Ch. K. P. ; Babilon, M. ; Schumacher, Stefan ; et al ( December 2017 , Journal of the Optical Society of America B)
Patterns and switching dynamics in polaritonic quantum fluids in semiconductor microcavities [Invited]

https://doi.org/10.1364/JOSAB.33.00C153

Kwong, N. H. ; Tsang, C. Y. ; Luk, M. H. ; Tse, Y. C. ; Lewandowski, P. ; Chan, Chris K. P. ; Leung, P. T. ; Schumacher, Stefan ; Binder, R. ( June 2016 , Journal of the Optical Society of America B)

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