A metastable tetragonal phase in two-dimensional halide perovskite lattices driven by a coherent Higgs mode
Dhanabalan, B. et al. Directional anisotropy of the vibrational modes in 2D-layered perovskites. ACS Nano 14, 4689–4697 (2020).…
Real-space observation of flat-band ultrastrong coupling between optical phonons and surface plasmon polaritons
Galego, J., Garcia-Vidal, F. J. & Feist, J. Cavity-induced modifications of molecular structure in the strong-coupling regime. Phys.…
Low-threshold lasing from colloidal quantum dots under quasi-continuous-wave excitation
Chemicals Cadmium oxide (CdO, 99.5%, trace metals basis), zinc acetate 99.99%, trace metals basis), oleylamine (70%, technical grade),…
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…
Ultra high-Q tunable microring resonators enabled by slow light
Slow light-induced linewidth narrowing The maximum achievable Q-factor (Q = ωc/κ) of resonators is primarily constrained by intrinsic loss mechanisms…
Widely tunable and narrow-linewidth violet lasers enabled by UV-transparent materials
Ludlow, A. D., Boyd, M. M., Ye, J., Peik, E. & Schmidt, P. O. Optical atomic clocks. Rev.…
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…
Brownian spin-locking effect | Nature Materials
Anderson, P. W. Absence of diffusion in certain random lattices. Phys. Rev. 109, 1492 (1958). Article CAS Google…
Attosecond physics in optical near fields
Experiment We use an amplified erbium fibre oscillator system as the laser source with a 170-fs pulse duration…
Eigenstate control of plasmon wavepackets with electron-channel blockade
Time-resolved measurement of plasmon wavepackets Our quantum device consists of a 100 μm-long electron waveguide, fabricated by depositing electrostatic…
Ultra-broadband wide-angle anti-reflection scheme utilizing multi-layer resonant metasurfaces
When light transitions from one medium to another, differences in refractive indices cause partial reflection which reduces the…
An optical meta-image-processor for enhanced imaging through strongly scattering media
Principle In an ideal imaging system, the PSF appears as a distinct Airy pattern, as shown in Fig. 1a.…