We discuss pairing of excitons and polaritons under effective spin-orbit coupling in two-dimensional semiconductors. The is shown to induce dynamical broadening a two-body bound state. Application transverse magnetic field yields the rich Feshbach resonance phenomenology. predict quantum bosonic halos with synthetic angular momentum ${L}_{z}=\ifmmode\pm\else\textpm\fi{}2\ensuremath{\hbar}$. $d$...

A sandwich structure consisting of Ag nanoparticles (NPs), p-aminothiophenol (p-ATP) self-assembled monolayers (SAMs), and Ag NPs was fabricated on glass and characterized by surface enhanced Raman scattering (SERS). The SERS spectrum of a p-ATP SAM in such sandwich structure shows that the electromagnetic enhancement is greater than that on Ag NPs assembled on glass. The obtained enhancement f...

A dielectric body couples with electromagnetic fields through radiation pressure and electrostrictive forces, which mediate phonon-photon coupling in cavity optomechanics. In a magnetic medium, according to the Korteweg-Helmholtz formula, which describes the electromagnetic force density acting on a medium, magneostrictive forces should arise and lead to phonon-magnon interaction. We report suc...