Two-spin entanglement induced by electron scattering in nanostructures

Abstract

We present a model where two magnetic impurities in a discrete tight-binding ring become entangled because of scattering processes associated to the injection of a conduction electron. We introduce a weak coupling approximation that allows us to solve the problem in a analytical way and compare the theory with the exact numerical results. We obtain the generation of entanglement both in a deterministic way and in a probabilistic one. The first case is intrinsically related to the structure of the two-impurity reduced density matrix, while the second one occurs when a projection on the electron state is performed.

References in corpus (4)

• Entanglement versus Correlations in Spin Systems
• Localizable Entanglement
• Entanglement in Mesoscopic Structures: Role of Projection
• Mesoscopic continuous and discrete channels for quantum information transfer

Cited by in corpus (4)

• Extraction of Singlet States from Noninteracting High-Dimensional Spins
• Electron Fabry-Perot interferometer with two entangled magnetic impurities
• Entanglement-induced electron coherence in a mesoscopic ring with two magnetic impurities
• Optimal electron propagation on a quantum chain by a topological phase