Work

Photons Walking the Line: A Quantum Walk with Adjustable Coin Operations

Year: 2010

Type: article

Abstract: We present the first robust implementation of a coined quantum walk over five steps using only passive optical elements. By employing a fiber network loop we keep the amount of required resources constant as the walker's position Hilbert space is increased. We observed a non-Gaussian distribution of the walker's final position, thus characterizing a faster spread of the photon wave packet in comparison to the classical random walk. The walk is realized for many different coin settings and initial states, opening the way for the implementation of a quantum-walk-based search algorithm.

Source: Physical Review Letters

DOI: 10.1103/physrevlett.104.050502

Authors: A. Schreiber, K. N. Cassemiro, V. Potoček, A. Gábris, P. J. Mosley, E. Andersson, I. Jex, Ch. Silberhorn

Institutions: Max Planck Institute for the Science of Light, Czech Technical University in Prague, Heriot-Watt University

Language: English

Topic: Quantum Computing Algorithms and Architecture

Subfield: Artificial Intelligence

Field: Computer Science

Domain: Physical Sciences

Open Access status: green

Funders: Alexander von Humboldt-Stiftung, Hungarian Scientific Research Fund

OpenAlex ID: W2074808661

FWCI: 35.64

Cites: 26

Cited by: 594

Related to: 10