Quantum walk on the line as an interference phenomenon -: art. no. 020301

被引：150

作者：

Knight, PL

Roldán, E

Sipe, JE

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Blackett Lab, Opt Sect, London SW7 2AZ, England

[2] Univ Valencia, Dept Opt, E-46100 Burjassot, Spain

[3] Univ Toronto, Dept Phys, Toronto, ON M5S 1A7, Canada

来源：

PHYSICAL REVIEW A | 2003年 / 68卷 / 02期

关键词：

D O I：

10.1103/PhysRevA.68.020301

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We show that the coined quantum walk on a line can be understood as an interference phenomenon, can be classically implemented, and indeed already has been. The walk is essentially two independent walks associated with the different coin sides, coupled only at initiation. There is a simple analogy between the evolution of walker positions and the propagation of light in a dispersive optical fiber.

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