In the case of one nuclear degree of freedom, we derive an explicit formula for the nuclear wave function transmitted through an avoided crossing, and show that it agrees to high accuracy with precise numerical calculations.

Abstract Enhancement of magneto-optical effects in hybrid magneto-plasmonic systems has attracted considerable recent attention because their potential for building non-reciprocal nanophotonic devices. Quantitative understanding the fundamental origin and contributing mechanisms enhancement is crucial optimizing applications. Here, we unravel different physical origins giant Faraday rotation el...

Atomic avoided crossings in strong magnetic and electric fields are usually identified by the energy level repulsion and by the sharp extremal value of the Shannon’s entropy of the two involved states. In this work the proposal of a new information-theoretic parameter, the continuous Fisher information, for the prediction and characterization of these nonlinear phenomena is done. For just aroun...

Interstitial oxygen in silicon (Si:O) is a model system for the study of vibrational modes in semiconductors. Hydrostatic pressure has been used to probe the vibrational properties of this defect. In this paper, the results of infrared (IR) spectroscopy experiments on Si : O and Si : O are reviewed. As pressure is applied, the oxygen atom buckles outward. This structural change results in a qua...

Avoided crossings between quasidegenerate rovibrational states in the Doppler-free twophoton excitation of the 14’ mode in the S, excited state of benzene are treated theoretically. Two sets of avoided crossings in plots of spectral line frequency vs J at a given K and AK have been reported experimentally between an initially prepared “light” state ( 14’ in zeroth order) and dark states, namely...

We analyze the entanglement between two matter modes in a hybrid quantum system consists of a microcavity, a quantum well, and a mechanical oscillator. Although the exciton mode in the quantum well and the mechanical oscillator are initially uncoupled, their interaction through the microcavity field results in an indirect exciton-mechanical mode coupling. We show that this coupling is a Fano-Ag...

The transmission of ultrashort (7 fs) broadband laser pulses through periodic gold nano-structures is studied. The distribution of the transmitted light intensity over wavelength and angle shows an efficient coupling of the incident p-polarized light to two counter-propagating surface plasmon (SP) modes. As a result of the mode interaction, the avoided crossing patterns exhibit energy and momen...

We find conditions for suppression of higher-order core modes in chalcogenide negative curvature fibers with an air core. An avoided crossing between the higher-order core modes and the fundamental modes in the tubes surrounding the core can be used to resonantly couple these modes, so that the higher-order core modes become lossy. In the parameter range of the avoided crossing, the higher-orde...