Chiral-mediated entanglement in an Aharonov-Bohm ring

Details Chiral-mediated entanglement in an Aharonov-Bohm ring Chiral-mediated entanglement in an Aharonov-Bohm ring

2012-01-27

arxiv.org/abs/1201.5863v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 5 figures; To appear in Phys. Rev. B

Scientific paper

We study the orbital entanglement in a biased Aharonov-Bohm ring connected in a four-terminal setup. We find that the concurrence achieves a maximum when the magnetic flux B coincides with an integer number of a half flux quantum 0 /2. We show that this behavior is a consequence of the existence of degenerate states of the ring having opposite chirality. We also analyze the behavior of the noise as a function of and discuss the reliability of this quantity as evidence of entanglement.

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