We investigate the effects of disorder on single particle time-evolution andtwo-particle correlations in an array of evanescently coupled waveguides withposition-dependent tunneling rates. In the clean limit, the energy spectrum ofsuch an array is widely tunable. In the presence of a Hermitian on-site ortunneling disorder, we find that the localization of a wave packet is highlysensitive to this energy spectrum. In particular, for an input confined to asingle waveguide, we show that the fraction of light localized to the originalwaveguide depends on the tunneling profile. We compare the two-particleintensity correlations in the presence of Hermitian, tunneling disorder andnon-Hermitian, parity-and-time-reversal ($\mathcal{PT}$) symmetric, on-sitepotential disorder. We show the two-particle correlation function in both casesis qualitatively similar, since both disorders preserve the particle-holesymmetric nature of the energy spectrum.
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