56 citations · 153 across the 6 of their papers we have counts for
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physics.optics2013★ 56 cited
Regularization of the spectral singularity in -symmetric systems by all order nonlinearities: Nonreciprocity and optical isolation
Xuele Liu, Subhasish Dutta Gupta, G. S. Agarwal
Spectral singularities are ubiquitous with PT-symmetry leading to infinite transmission and reflection coefficients. Such infinities imply the divergence of the fields in the mediu…
quant-ph2013★ 1 cited
Photon Aided and Inhibited Tunneling of Photons
Xuele Liu, G. S. Agarwal
In the light of the interest in the transport of single photons in arrays of waveguides, fiber couplers, photonic crystals, etc., we consider the quantum mechanical process of the…