Analysis and minimization of bending losses in discrete quantum networks
arXiv:1206.2256 · doi:10.1103/PhysRevA.85.062319
Abstract
We study theoretically the transfer of quantum information along bends in two-dimensional discrete lattices. Our analysis shows that the fidelity of the transfer decreases considerably, as a result of interactions in the neighbourhood of the bend. It is also demonstrated that such losses can be controlled efficiently by the inclusion of a defect. The present results are of relevance to various physical implementations of quantum networks, where geometric imperfections with finite spatial extent may arise as a result of bending, residual stress, etc.
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- Transfer of optical signals around bends in two-dimensional linear photonic networks
- Search and state transfer between hubs by quantum walks