idlerdriven
Idlerdriven is a descriptor used in nonlinear and quantum optics to characterize protocols in which the idler mode produced in a parametric process acts as the main driving field shaping the dynamics of other modes, typically the signal mode. The concept stems from the strong correlations between signal and idler photons generated in processes such as spontaneous parametric down-conversion (SPDC) and four-wave mixing, where the idler can be used to seed, condition, or stabilize the evolution of the system.
Mechanisms often involve external injection of the idler into an optical parametric oscillator or nonlinear medium,
Applications of idler-driven approaches include quantum state engineering, heralded single-photon and squeezed-vacuum generation, and improved mode
In the literature, idlerdriven is not a universally standardized term but is used to describe these driver-like