We investigate the quantum walks and generation of photon pairs in twisted waveguide arrays. We show that the correlation properties of photon pairs in this case can be adjusted by changing the waveguide twist angle of the and the profile of the pump amplitude at the input to the array.
42.50.Ex Optical implementations of quantum information processing and transfer
42.65.Lm Parametric down conversion and production of entangled photons
$^1$ Department of photonics and optical information technology, Faculty of Physics, ITMO University, 49 Kronverksky Ave., St.Petersburg, 197101, Russia
$^2$ Nonlinear Physics Centre, Research School of Physics and Engineering, Australian National University, Canberra, ACT 2601, Australia