Disorder effects in tunable waveguide arrays with parity-symmetric tunneling
Disorder effects in tunable waveguide arrays with parity-symmetric tunneling
We investigate the effects of disorder on single-particle time evolution and two-particle correlations in an array of evanescently coupled waveguides with position-dependent tunneling rates. In the clean limit, the energy spectrum of such an array is widely tunable. In the presence of a Hermitian on-site or tunneling disorder, we find …