Multifrequency resonances in multiple-pulse NMR on a spin-1/2 system

Weak-Coupling Theory for Low-Frequency Periodically Driven Two-Level Systems

“…The semiclassical periodically driven two-level model is an important prototype in diverse phenomena in nearly every sub-fields of optics, physics, and chemistry, [1−9] such as nuclear magnetic resonance technique related applications, [9,10] acoustically induced transparency, [11] Josephson junction devices, [12] lasernucleus interaction, [13] various effects of few-cycle ultrashort pulses, [7,14] and high harmonic generation. [15−17] However, solving analytically this important model even approximately remains to be a great challenge although intensive studies with some progress have been pursued for more than sixty years.…”

Weak-Coupling Theory for Semiclassical Periodically Driven Two-Level Systems: Beyond Rotating-Wave Approximation

“…The semiclassical periodically driven two-level model is an important prototype in diverse phenomena in nearly every sub-field of optics, physics, and chemistry [1−8] such as nuclear magnetic resonance technique related applications, [8,9] acoustically induced transparency, [10] Josephson-junction devices, [11] lasernucleus interaction, [12] various effects of a few-cycle pulses, [7,13] and high harmonic generation. [14−16] However, solving analytically this important model even approximately proves to be an extremely hard and complex task.…”