Intertwining of lasing and superradiance under spintronic pumping
Physical Review B, 2023•APS
We introduce a quantum optics platform featuring the minimal ingredients for the description
of a spintronically pumped magnon condensate, which we use to promote driven-dissipative
phase transitions in the context of spintronics. We consider a Dicke model weakly coupled to
an out-of-equilibrium bath with a tunable spin accumulation. The latter is pumped
incoherently in a fashion reminiscent of experiments with magnet-metal heterostructures.
The core of our analysis is the emergence of a hybrid lasing-superradiant regime that does …
of a spintronically pumped magnon condensate, which we use to promote driven-dissipative
phase transitions in the context of spintronics. We consider a Dicke model weakly coupled to
an out-of-equilibrium bath with a tunable spin accumulation. The latter is pumped
incoherently in a fashion reminiscent of experiments with magnet-metal heterostructures.
The core of our analysis is the emergence of a hybrid lasing-superradiant regime that does …
We introduce a quantum optics platform featuring the minimal ingredients for the description of a spintronically pumped magnon condensate, which we use to promote driven-dissipative phase transitions in the context of spintronics. We consider a Dicke model weakly coupled to an out-of-equilibrium bath with a tunable spin accumulation. The latter is pumped incoherently in a fashion reminiscent of experiments with magnet-metal heterostructures. The core of our analysis is the emergence of a hybrid lasing-superradiant regime that does not take place in an ordinary pumped Dicke spin ensemble, and which can be traced back to the spintronics pumping scheme. We interpret the resulting nonequilibrium phase diagram from both a quantum optics and a spintronics standpoint, supplying a conceptual bridge between the two fields. The outreach of our results concern dynamical control in magnon condensates and frequency-dependent gain media in quantum optics.
American Physical Society