The tailored properties of hybrid systems offer paradigms for nonlinear dynamical couplings in the quantum regime, facilitating the unraveling of new phenomena. I show theoretically that an oscillator excited by a spin-polarized current passing through a quantum dot realizes a highly efficient single-atom laser. It provides access to an intriguing regime of coherent coupling beyond the standard rotating-wave approximation, heralded by the emergence of complex switching dynamics between multiple limit-cycles. Furthermore, our model can be realized using current technology in a variety of different platforms, with the oscillator formed by either a microwave cavity or a nanomechanical resonator. https://arxiv.org/abs/1808.04884

Contact : robert.whitney@grenoble.cnrs.fr