Observation of space-time surface plasmon polaritons
Theoretical formulation The conceptual formulation of ST-SPPs is best understood by visualizing their spectral representation on the surface…
Observation of hyperbolic intersubband polaritons in native-dielectric-doped van der Waals semiconductor quantum wells
Intersubband transition and native-dielectric-doping The intersubband transition energies in the WSe2 QWs can be approximated with an infinite…
On-site enhancement and control of spin-forbidden dark excitons in a plasmonic heterostructure
Mak, K. F., Lee, C., Hone, J., Shan, J. & Heinz, T. F. Atomically thin MoS2: a new…
Room-temperature spin-layer locking of exciton–polariton nonlinearities in a WS2 microcavity
Žutić, I., Fabian, J. & Sarma, S. D. Spintronics: fundamentals and applications. Rev. Mod. Phys. 76, 323 (2004).…
Ultraconfined terahertz phonon polaritons in hafnium dichalcogenides
Li, N. et al. Direct observation of highly confined phonon polaritons in suspended monolayer hexagonal boron nitride. Nat.…
A lithography-free approach to polaritonic Luneburg lenses
Gradient indices from dielectric environment engineering The propagation of polaritons is significantly influenced by the surrounding dielectric environment,…
Microscopic theory of polariton group velocity renormalization
Model system We use the Generalized Holstein-Tavis-Cummings (GHTC) Hamiltonian23,24,25,26 to describe N excitons interacting with \({{{\mathcal{M}}}}\) cavity modes,…
X-ray parametric down-conversion reveals EUV-polariton
Experimental setup We performed the experiment at the large solid-angle spectrometer of beamline ID20 at ESRF26. The setup’s…