Electric Field effects on quantum correlations in semiconductor quantum dots

Details Electric Field effects on quantum correlations in semiconductor quantum dots Electric Field effects on quantum correlations in semiconductor quantum dots

2012-04-18

arxiv.org/abs/1204.4005v1

Physics

Quantum Physics

6 pages,6 figures

Scientific paper

We study the effect of external electric bias on the quantum correlations in the array of optically excited coupled semiconductor quantum dots. The correlations are characterized by the quantum discord and concurrence and are observed using excitonic qubits. We employ the lower bound of concurrence for thermal density matrix at different temperatures. The effect of the F\"orster interaction on correlations will be studied. Our theoretical model detects nonvanishing quantum discord when the electric field is on while concurrence dies, ensuring the existence of nonclassical correlations as measured by the quantum discord.

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