Two-dimensional complex parity-time-symmetric photonic structures
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We propose a simple realistic two-dimensional complex parity-time-symmetric photonic structure that is described by a non-Hermitian potential but possesses real-valued eigenvalues. The concept is developed from basic physical considerations to provide asymmetric coupling between harmonic wave components of the electromagnetic field. The structure results in a nonreciprocal chirality and asymmetric transmission between in- and out-coupling channels into the structure. The analytical results are supported by a numerical study of the Bloch-like mode formations and calculations of a realistic planar semiconductor structure.
CitationTurduev, M., Botey, M., Giden, I., Herrero, R., Kurt, H., Ozbay, E., Staliunas, K. Two-dimensional complex parity-time-symmetric photonic structures. "Physical review A", 20 Febrer 2015, núm. 2.