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PT-Symmetric Cladding Layers for high-Q Brewster Modes and Embedded Eigenstates

Authors: Zarko Sakotic; Alex Krasnok; Norbert Cselyuszka; Nikolina Jankovic; Andrea Alu;

PT-Symmetric Cladding Layers for high-Q Brewster Modes and Embedded Eigenstates

Abstract

Epsilon near near-zero (ENZ) materials have been raising significant interest in various research areas. Rich concepts such as photonic doping an d supercoupling featuring ENZ materials have been reported. ENZ materials have been proven to be instrumental to ach ieve embedded eigenstates, or self self-sustained electromagnetic resonances in open structures with momentum compatible with the radiation conti nuum. However, unavoidable absorption in realistic ENZ materials results in a finite lifetime of these modes, and de cay to radiation. Here, we present a strategy to tackle the losses of ENZ materials in order to produce unbounded high high-Q resonances with the use of PT -symmetry and the concept of suppressed leakage. These results pave the way to efficient light trapping an d sensing applications with realistic ENZ materials.

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
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popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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