Directional correlations in quantum walks with two particles
Štefaňák, M. and Barnett, S M and Kollár, B and Kiss, T and Jex, I (2011) Directional correlations in quantum walks with two particles. New Journal of Physics, 13. 033029. ISSN 1367-2630 (https://doi.org/10.1088/1367-2630/13/3/033029)
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Abstract
Quantum walks on a line with a single particle possess a classical analogue. Involving more walkers opens up the possibility of studying collective quantum effects, such as many-particle correlations. In this context, entangled initial states and the indistinguishability of the particles play a role. We consider the directional correlations between two particles performing a quantum walk on a line. For non-interacting particles, we find analytic asymptotic expressions and give the limits of directional correlations. We show that by introducing delta-interaction between the particles, one can exceed the limits for non-interacting particles.
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Item type: Article ID code: 31066 Dates: DateEvent21 March 2011PublishedSubjects: Science > Physics Department: Faculty of Science > Physics Depositing user: Pure Administrator Date deposited: 16 May 2011 10:27 Last modified: 01 Oct 2024 00:18 Related URLs: URI: https://strathprints.strath.ac.uk/id/eprint/31066