Entanglement Routers Using Macroscopic Singlets

Details Entanglement Routers Using Macroscopic Singlets Entanglement Routers Using Macroscopic Singlets

2010-07-26

arxiv.org/abs/1007.4516v2

Phys. Rev. Lett. 105, 187204 (2010)

Physics

Quantum Physics

4 pages, 5 figures. Slightly longer than the published version

Scientific paper

10.1103/PhysRevLett.105.187204

We propose a mechanism where high entanglement between very distant boundary spins is generated by suddenly connecting two long Kondo spin chains. We show that this procedure provides an efficient way to route entanglement between multiple distant sites. We observe that the key features of the entanglement dynamics of the composite spin chain are remarkably well described using a simple model of two singlets, each formed by two spins. The proposed entanglement routing mechanism is a footprint of the emergence of a Kondo cloud in a Kondo system and can be engineered and observed in varied physical settings.

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