The connection between noise and quantum correlations in a double quantum dot

Details The connection between noise and quantum correlations in a double quantum dot The connection between noise and quantum correlations in a double quantum dot

2007-09-27

arxiv.org/abs/0709.4317v2

Phys. Rev. B 77, 035302 (2008).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, major revision, to be published in Phys. Rev. B

Scientific paper

10.1103/PhysRevB.77.035302

We investigate the current and noise characteristics of a double quantum dot system. The strong correlations induced by the Coulomb interaction create entangled two-electron states and lead to signatures in the transport properties. We show that the interaction parameter phi, which measures the admixture of the double-occupancy contribution to the singlet state and thus the degree of entanglement, can be directly accessed through the Fano factor of super-Poissonian shot noise.

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