IEEE Journal of Selected Topics in Quantum Electronics
Abstract
How one can fabricate the Parity-Time (PT) symmetric
siblings of commonly used metals in the visible? This
work tries to give an answer to that question by providing
the features of the active media which conjugately pair the
complex permittivities of ordinary metals (Copper, Aluminum,
Silver, Gold, Platinum) at the optical frequencies. The frequency
response model of quantum dots (QDs) is used to evaluate the
effective permittivity of the active material; their characteristics
which give a PT-symmetric counterpart for the considered
metal are deduced through a multi-step optimization process.
The required resonance frequencies, loss factors and degrees
of population inversion for the QDs are provided for various
frequencies and metals. The response of the metals when they
are PT-symmetrically coupled with the provided mixtures is
demonstrated in specific photonic configurations and interesting
properties with certain applicability potential are reveale
