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.
Original language | English |
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Article number | 033029 |
Number of pages | 19 |
Journal | New Journal of Physics |
Volume | 13 |
DOIs | |
Publication status | Published - 21 Mar 2011 |
Keywords
- algorithms
- search
- computational physics
- quantum information