Entanglement detection for electrons via witness operators

Details Entanglement detection for electrons via witness operators Entanglement detection for electrons via witness operators

2006-07-25

arxiv.org/abs/cond-mat/0607645v2

Phys. Rev. B 75, 165327 (2007)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

12 pages, 5 figures; published version

Scientific paper

10.1103/PhysRevB.75.165327

We discuss an implementation of the entanglement witness, a method to detect entanglement with few local measurements, in systems where entangled electrons are generated both in the spin and orbital degrees of freedom. We address the efficiency of this method in various setups, including two different particle-hole entanglement structures, and we demonstrate that it can also be used to infer information on the possible dephasing afflicting the devices.

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