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Radiative decay phenomena in atomic or solid state systems
have attracted a lot of interest in recent years. For example,
it is well known that light-mediated coupling in an
ensemble of resonant two-level systems results in the formation
of collective states with cooperative radiative decay
characteristics. In particular, super- or subradiant damping
can be observed, depending on the symmetry of the induced
normal modes. Similar to studies on optical lattices, radiative
interwell coupling in Bragg-periodic multiple quantum
well structures, i.e., resonant one-dimensional photonic crystals,
has been investigated as an idealized model system.
Recently, a team from the PND Network has studied the influence of near-field
interactions in a radiatively coupled plasmonic lattice. It has
been demonstrated that plasmon hybridization can be reversed
by directly controlling the near-field-induced coupling.
In particular, the spectral interference between superand
subradiant modes can be altered by simply modifying
the symmetry of the lattice. The discussed fundamental phenomena
will allow a broad range of applications, including
the design of novel metamaterials, filters, and sensors.
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