Entanglement Routers Using Macroscopic Singlets
Abolfazl BayatDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United KingdomSougato BoseDepartment of Physics and Astronomy, University College London, Gower Street, London WC1E 6BT, United KingdomPasquale SodanoDepartment of Physics, University of Perugia, and INFN, Sezione di Perugia, Via A. Pascoli, 06123, Perugia, Italy
2010en
ABI
Abstract
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 well described by a simple model of two singlets, each formed by two spins. The proposed 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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