Extended Data Fig. 1: Setup for NV-VdP hybrid system.
From: Exceptional sensitivity near the bistable transition point of a hybrid quantum system
a, The experimental setup for the NV-VdP system, we use a microwave cavity and two coupling loops to form a loop oscillator, we use a directional coupler to direct the signal out, this signal is then directed to a heterodyne measurement, where an external signal generator is used to move the microwave signal to an intermediate frequency with a frequency of several MHz. We use a series of amplifiers and attenuators to reach a low microwave input to the system so that the spin is not saturated for the NV-cQED system. b, COMSOL simulation for the dielectric resonator. Our dielectric resonator contains two cylinder with outer diameter: 0.669 inch; inner diameter: 0.236 inch; Thickness: 0.314 inch. c, The cavity measurement with critical coupling.
