Mapping a quantum walk by tuning the coupling coefficient

Autor:	Ng, Kian Fong, Rodrigues, Manuel J. L. F., Viana-Gomes, José, Ling, Alexander, Grieve, James A.
Rok vydání:	2018
Předmět:	Quantum Physics Physics - Optics
Druh dokumentu:	Working Paper
Popis:	We present a method to map the evolution of photonic random walks that is compatible with nonclassical input light. Our approach leverages a newly developed flexible waveguide platform to tune the jumping rate between spatial modes, allowing the observation of a range of evolution times in a chip of fixed length. In a proof-of-principle demonstration we reconstruct the evolution of photons through a uniform array of coupled waveguides by monitoring the end-face alone. This approach enables direct observation of mode occupancy at arbitrary resolution, extending the utility of photonic random walks for quantum simulations and related applications. Comment: 4 pages, 4 figures. Substantial revision
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1802.09712 Zobrazit plný text záznamu View this record from Arxiv