Nonlinear circuit quantum electrodynamics based on the charge-qubit–resonator interface
Nonlinear circuit quantum electrodynamics based on the charge-qubit–resonator interface
We explore applications of nonlinear circuit QED with a charge qubit inductively coupled to a microwave LC resonator in the photonic engineering and ultrastrong-coupling multiphoton quantum optics. Simply sweeping the gate-voltage bias achieves arbitrary Fock-state pulsed maser, where the single qubit plays the role of artificial gain medium. Resonantly pumping …