Reducing Microwave Absorption with Chaotic Microwaves

We study the response of a two-level quantum system to a chaoticsignal using numerical methods and compare it to the response to a sinusoidalsignal. We expect the largest response for sinusoidaldriving functions, because the Schrodinger equation is linear. The method is based on numerical solutions of the Schrodinger solution of the two-level system, and the chaoticsignal used is that of a Chua oscillator. We find that when two-level systems are perturbed by a chaoticsignal, the peak population of the initially unpopulated state is much lower than which is produced by a sinusoidalsignal of small detuning. This is true even when the peak frequency of the chaoticsignal, which is identified via a discrete fourier transform, is close to the resonant frequency. We also find that the response is weaker for a weaker signal, where the resonant peak for a sinusoidalsignal would be narrower. We discuss potential applications of this result in the field of microwave power transmission, as it shows applying chaoticforcing functions to transmitted microwaves used for power transmissioncould decrease unintended absorption of microwaves by organic tissue.