Integrated photonic 3D waveguide arrays for quantum random walks on a circle

Details Integrated photonic 3D waveguide arrays for quantum random walks on a circle Integrated photonic 3D waveguide arrays for quantum random walks on a circle

2010-10-19

arxiv.org/abs/1010.3784v2

Physics

Quantum Physics

78 pages including title page, abstract, and references. 41 figures. Honours thesis

Scientific paper

Quantum random walks (QRWs) can be used to perform both quantum simulations and quantum algorithms. In order to exploit this potential, quantum walks on different types of graphs must be physically implemented. To this end we design, model and experimentally fabricate, using the femtosecond laser direct-write technique, a 3D tubular waveguide array within glass to implement a photonic quantum walk on a circle. The boundary conditions of a QRW on a circle naturally suggests a 3D waveguide implementation - allowing much simpler device design than what could be achieved using a 2D waveguide architecture. We show that, in some cases, three-dimensional photonic circuits can be more suited to the simulation of complex quantum phenomena.

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