Abstract
A periodic layered medium, with unit cells consisting of a dielectric and an
electromagnetically-induced transparency (EIT)-based atomic vapor, is designed for
light propagation manipulation. Considering that a destructive quantum interference
relevant to a two-photon resonance emerges in EIT-based atoms interacting with both
control and probe fields, an EIT-based periodic layered medium exhibits a flexible
frequency-sensitive optical response, where a very small variation in the probe
frequency can lead to a drastic variation in reflectance and transmittance. The
present EIT-based periodic layered structure can result in controllable optical
processes that depend sensitively on the external control field. The tunable and
sensitive optical response induced by the quantum interference of a multi-level
atomic system can be applied in the fabrication of new photonic and quantum optical
devices. This material will also open a good perspective for the application of such
designs in several new fields, including photonic microcircuits or integrated
optical circuits.
© 2012 Chinese Optics Letters
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