ausblenden:
Schlagwörter:
-
MPINP:
Research group J. Evers – Division C. H. Keitel
Zusammenfassung:
The thesis is devoted to the theoretical studies of coherent control and manipulation
of classical or quantum light via nonlocal effects. At the classical level, controllable
light propagation dynamics in the paraxial regime is investigated. The specific type of
nonlocal linear effects induced in thermal atomic vapor is explored to achieve diffractionless
and lossless propagation, uniform phase modulation, and frequency conversion with
diffractionless image duplication for laser beams with arbitrarily encoded spatial profiles.
Next, the study is extended to investigate propagation dynamics in the presence of nonlocal
nonlinear effects generated in thermal interacting Rydberg atoms, which mainly
reveals simultaneous competition between the nonlocal nonlinear absorption and the
modulational instability for each wave component. Moreover, parity-time (PT) symmetric
dynamics in cold Rydberg atoms are exploited, and it is shown that a phase
transition from unbroken to broken PT symmetry can be induced by nonlocal nonlinear
effects. At the quantum level, it is further proposed to test the quantum nonlocality of
single x-ray photons in a system where very weak x-ray pulses interact with 57Fe nuclei
in a thin cavity, such that a Bell-like inequality in the single-photon version is violated.
All these proposals are feasible in current experimental settings.
