Polariton
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Related Articles from SNS
Polariton spectroscopy at the diamond K-edge via X-ray parametric down-conversion
arXiv:2606.02619v1 Announce Type: new Abstract: It has recently been shown that x-ray parametric down-conversion (XPDC) provides access to high-energy polaritons, resulting from the hybridization of down-converted photons with electronic excitations in a nonlinear medium. Here, we present a spectrally resolved study of this effect around the K-shell absorption edge in diamond. Our results exhibit pronounced signatures of polaritonic hybridization, which we visualize by introducing a...
Polalrized reservoirs in dynamics of polariton condensation
arXiv:2606.04808v1 Announce Type: new Abstract: We review the problem of description of the dynamics of driven-disspipative spinor polariton condensates, focusing on the terms corresponding to the coupling between a macroscopic wavefunction of the condensdate and incoherent excitonic reservoir created by a non-resonant pump. We demonstrate that the existing version of the theory breaks down in case, when reservoir has non-zero components of the Stokes vector corresponding to in-plane linear...
Thermal chemical reactivity in Frenkel exciton-polariton cavities
arXiv:2605.31188v1 Announce Type: new Abstract: Hybrid light-matter states formed under strong coupling between molecular excitations and confined electromagnetic modes provide a potential route to modify chemical properties. Here we compute and compare a thermally averaged measure of molecular chemical activity for an equilibrium ensemble of molecules inside and outside a planar microcavity, explicitly accounting for the spatial distribution (and hence the in-plane wavevector dispersion) of...
Orbital Angular Momentum Locking via Bound States in the Continuum
Announce Type: new Abstract: Optical vortices are electromagnetic fields twisting around a phase singularity, resulting in quantized orbital angular momentum (OAM). When such vortices are formed by evanescent hybrid light-matter quasiparticles known as polaritons, they are referred to as polaritonic vortices (PVs). The nanometer-scale topologically robust features of such PVs promise to enable applications for lasing and thermal emission at deeply subwavelength scales.
Single plasmon transport in one dimensional nanowire
arXiv:2606.09523v1 Announce Type: new Abstract: We introduce a unified theoretical framework for single-plasmon transport in one-dimensional nanowires, bridging the quantized electromagnetic Green's tensor formalism with effective non-Hermitian Hamiltonian models. This approach naturally incorporates propagating surface plasmon polaritons, high-order modes dissipative channels, and intrinsic losses. We investigate both the stationary regime and the spatio-temporal dynamics of a...
Coherent room-temperature dipole synchronization in nanocavity sheets
arXiv:2606.06490v1 Announce Type: cross Abstract: Plasmonic nanocavities enable the synchronization of spatially distant emissive dipoles through strong near-field coupling in sub-nm gaps. We report formation of a room-temperature synchronized dipole state in locally-ordered plasmonic nanogap 2D arrays under non-resonant continuous-wave pumping. Unlike lasers, photonic Bose-Einstein condensates, or exciton-polariton condensates, this system exhibits spatial coherence across the dipoles,...
Skyrmions in scalar fields of non-Hermitian optical microcavities: spontaneous formation, nonlinear control, and optical forces
Announce Type: new Abstract: Topological textures of light offer powerful routes for structuring optical fields, controlling wave transport, and manipulating matter. Skyrmions, long studied as topological solitons in vector fields, have recently been extended to scalar wave systems, including acoustics, hydrodynamics, and plasmonics. However, their realization in two-dimensional scalar wave propagation with nonlinearities and in quantum fluids remains uncharted.
Photonic Analog Quantum Simulation of (1+1)-Dimensional $U(1)$ Lattice Gauge Theory with Dynamical Matter
Announce Type: cross Abstract: We propose a photonic scheme for analog quantum simulation of a $U(1)$ Lattice Gauge Theory (LGT) with dynamical matter based on the Jaynes-Cummings-Hubbard (JCH) model. Here, an array of interacting cavities in the strong-coupling regime of cavity Quantum Electrodynamics is mapped onto the alternating matter and gauge-field sites of the spin-1/2 Quantum Link Model. In contrast to other analog LGT quantum simulation methods, our approach implements the desired...
Heat breaks the rules at the nanoscale and scientists used it to their advantage
Heat breaks the rules at the nanoscale and scientists used it to their advantage Tiny gold-engineered structures let scientists dramatically boost and control heat flow, potentially transforming everything from computer chips to energy systems. - Date: - June 8, 2026 - Source: - College of Engineering, Carnegie Mellon University - Summary: - Scientists used nanoscale gold metamaterials to supercharge heat transfer across tiny gaps, achieving up to four times more energy flow than similar...
Breakdown of Fluctuational Electrodynamics in the Extreme Near Field
Announce Type: cross Abstract: Fluctuational electrodynamics relies on the assumption that thermal fluctuations in distinct bodies are statistically independent. We show that this approximation breaks down in the extreme near-field regime, where overlapping evanescent surface fields hybridize optical phonons across nanometric vacuum gaps and generate fluctuating-current cross correlations between opposite interfaces.