TITLE:
Entanglement Generation in Spatially Separated Systems Using Quantum Walk
AUTHORS:
C. M. Chandrashekar, Sandeep K. Goyal, Subhashish Banerjee
KEYWORDS:
Quantum Walk; Entanglement Generation; Localization
JOURNAL NAME:
Journal of Quantum Information Science,
Vol.2 No.2,
June
22,
2012
ABSTRACT: We present a scheme for generating entanglement between two spatially separated systems from the spatial entanglement generated by the interference effect during the evolution of a single-particle quantum walk. Any two systems which can interact with the spatial modes entangled during the walk evolution can be entangled using this scheme. A notable feature is the ability to control the quantum walk dynamics and its localization at desired pair lattice sites irrespective of separation distance resulting in a substantial control and improvement in the entanglement output. Implementation schemes to entangle spatially separated atoms using quantum walk on a single atom is also presented.