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Parity-time symmetry breaking and amplifier-absorber transitions in plasmonic nanoparticles

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Abrupt transitions in the scattering response of parity-time (PT)-symmetric nanoparticles is discussed. Based on the closed-form analytical solution of a complex scattering problem, we show that material imbalance can generate strong absorbing or amplifying scattering states above PT threshold.

© 2015 Optical Society of America

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