Bose-Einstein condensation of magnons under coherent pumping by light

Room-temperature quantum computing and solid-state quantum simulations have been long-standing goals in the field of quantum information science. Magnon Bose-Einstein condensation at room temperature may provide a key advance towards these objectives. Normally, the magnon Bose-Einstein condensation is driven by microwave pumping and detected by light. Here, the authors propose a method to create stable magnon condensate using lasers in a magneto-optical cavity, opening new avenues for all-optical control in quantum magnonics.