Spatial entanglement using a quantum walk on a many-body system

Details Spatial entanglement using a quantum walk on a many-body system Spatial entanglement using a quantum walk on a many-body system

2009-01-06

arxiv.org/abs/0901.0671v4

J. Phys. A: Math. Theor. 43 (2010) 235303

Physics

Quantum Physics

13 pages, 10 figures. Published version

Scientific paper

10.1088/1751-8113/43/23/235303

The evolution of a many-particle system on a one-dimensional lattice, subjected to a quantum walk can cause spatial entanglement in the lattice position, which can be exploited for quantum information/communication purposes. We demonstrate the evolution of spatial entanglement and its dependence on the quantum coin operation parameters, the number of particles present in the lattice and the number of steps of quantum walk on the system. Thus, spatial entanglement can be controlled and optimized using a many-particle discrete-time quantum walk.

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