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Entanglement detection for electrons via witness operators

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arxiv cond-mat/0607645 v2 pith:4A3CKHKU submitted 2006-07-25 cond-mat.mes-hall quant-ph

Lara Faoro , Fabio Taddei This is my paper · ORCID
classification cond-mat.mes-hallquant-ph
keywords entanglementelectronsmethodwitnessaddressafflictingdegreesdemonstrate
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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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