Relaxed parameter sensitivity for multiphoton quantum resonances
Phys. Rev. A 114, 033706 – Published 8 September, 2026
DOI: https://doi.org/10.1103/gv1y-jzpr
Abstract
Multiphoton resonances provide an important manifestation of counterrotating interactions in light-matter systems. These resonances, however, are sensitive to detuning errors, making the phenomena challenging to experimentally observe. In this manuscript, we introduce an optimization strategy to address this problem. By using an optimized parameter segmented sequence, the sensitivity to quasistatic detuning errors of the high-order quantum state transfers can be substantially relaxed. We prove the versatility of our strategy against frequency detunings by demonstrating the evolution of two specific models. In both cases, the parameter window for maintaining a high state-transfer fidelity is substantially expanded. We further analyze the output photon flux of the optimized system and, taking the three-photon resonance as an example, demonstrate that the system remains capable of generating a stable output photon flux even in the presence of detuning errors.
