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Measuring the entanglement between double quantum dot charge qubits

Clive Emary
Phys. Rev. B 80, 161309(R) – Published 22 October 2009

Abstract

We present a scheme for creating and measuring entanglement between two double quantum dot charge qubits in a transport setup in which voltage pulses can modify system parameters. Detection of entanglement is performed via the construction of a Bell inequality with current correlation measurements. An essential feature is the use of the internal dynamics of the qubits as the constituent electrons tunnel into the leads to give the single-particle rotations necessary for the Bell measurement.

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  • Received 30 September 2009

DOI:https://doi.org/10.1103/PhysRevB.80.161309

©2009 American Physical Society

Authors & Affiliations

Clive Emary

  • Institut für Theoretische Physik, Hardenbergstr. 36, TU Berlin, D-10623 Berlin, Germany

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Issue

Vol. 80, Iss. 16 — 15 October 2009

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