Research

Photons walking the line: a quantum walk with adjustable coin operations


Reference:

Schreiber, A., Cassemiro, K. N., Potoček, V., Gábris, A., Mosley, P. J., Andersson, E., Jex, I. and Silberhorn, C., 2010. Photons walking the line: a quantum walk with adjustable coin operations. Physical Review Letters, 104 (5), 050502.

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Official URL:

http://dx.doi.org/10.1103/PhysRevLett.104.050502

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.

Details

Item Type Articles
CreatorsSchreiber, A., Cassemiro, K. N., Potoček, V., Gábris, A., Mosley, P. J., Andersson, E., Jex, I. and Silberhorn, C.
DOI10.1103/PhysRevLett.104.050502
DepartmentsFaculty of Science > Physics
RefereedYes
StatusPublished
ID Code27598

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