Measuring the Entanglement between Double Quantum Dot Charge Qubits

Details Measuring the Entanglement between Double Quantum Dot Charge Qubits Measuring the Entanglement between Double Quantum Dot Charge Qubits

2009-05-14

arxiv.org/abs/0905.2269v2

Phys. Rev. B 80, 161309(R) (2009)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

10.1103/PhysRevB.80.161309

We present a scheme for creating and measuring entanglement between two double quantum dot charge qubits in a transport set-up 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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