Theoretical analysis of quantum random walks with stress-engineered optics
Quantum random walks (QRWs) are random processes in which the resulting probability density of the “walker” state, whose movement is governed by a “coin” state, is described in a nonclassical manner. Previously, Q-plates have been used to demonstrate QRWs with polarization and orbital angular momentum playing the roles of coin and walker states, respectively. In this theoretical analysis, we show how stress-engineered optics can be used to develop new platforms for complex QRWs through relatively simple optical elements. Our work opens up new paths to speed up classical-to-quantum transitions in robust photonic networks.
Publication Source (Journal or Book title)
Journal of the Optical Society of America A: Optics and Image Science, and Vision
Liang, K., Ariyawansa, A., Magaña-Loaiza, O., & Brown, T. (2020). Theoretical analysis of quantum random walks with stress-engineered optics. Journal of the Optical Society of America A: Optics and Image Science, and Vision, 37 (1), 135-141. https://doi.org/10.1364/JOSAA.37.000135