The recent discoveries of two-dimensional (2D) magnets,,,,–and their stacking into van der
Waals structures,,,–have expanded the horizon of 2D phenomena. One exciting application …

The interaction between distinct excitations in solids is of both fundamental interest and
technological importance. One such interaction is the coupling between an exciton, a …

An exciton is the bosonic quasiparticle of electron–hole pairs bound by the Coulomb
interaction. Bose–Einstein condensation of this exciton state has long been the subject of …

Controlling quantum materials with light is of fundamental and technological importance. By
utilizing the strong coupling of light and matter in optical cavities,–, recent studies were able …

The existence of bound states of elementary spin waves (magnons) in one-dimensional
quantum magnets was predicted almost 80 years ago. Identifying signatures of magnon …

Abstract Two-dimensional (2D) semiconductors enable the investigation of light–matter
interactions in low dimensions,. Yet, the study of elementary photoexcitations in 2D …

We report the direct observation of strong coupling between magnons and phonons in a two-
dimensional antiferromagnetic semiconductor FePS 3, via magneto-Raman spectroscopy at …

Van der Waals magnets have emerged as a fertile ground for the exploration of highly
tunable spin physics and spin-related technology. Two-dimensional (2D) magnons in van …

Combining different physical systems in hybrid quantum circuits opens up novel possibilities
for quantum technologies. In quantum magnonics, quanta of collective excitation modes in a …

Magnons are quantized collective spin-wave excitations in magnetically ordered materials.
Revealing the interactions among these collective modes is crucial for the understanding of …