Detecting Kondo Entanglement by Electron Conductance.

Clicks: 236
ID: 97144
2018
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Abstract
Quantum entanglement between an impurity spin and electrons nearby is a key property of the single-channel Kondo effects. We show that the entanglement can be detected by measuring electron conductance through a double quantum dot in an orbital Kondo regime. We derive a relation between the entanglement and the conductance, when the SU(2) spin symmetry of the regime is weakly broken. The relation reflects the universal form of many-body states near the Kondo fixed point. Using it, the spatial distribution of the entanglement-hence, the Kondo cloud-can be detected, with breaking of the symmetry spatially nonuniformly by electrical means.
Reference Key
yoo2018detectingphysical Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Yoo, Gwangsu;Lee, S-S B;Sim, H-S;
Journal physical review letters
Year 2018
DOI
10.1103/PhysRevLett.120.146801
URL
Keywords
probabilities born’s rule decoherence quantum darwinism quantum jumps

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