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arXiv · 1208.0729

Finite frequency noise in a quantum point contact between helical edge states

J. -R. Souquet·P. Simon
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Abstract

We propose and analyze the non-equilibrium finite frequency current-current correlations as a mean to characterize the helical nature of the edge states in a quantum spin hall geometry. We show that the finite frequency noise enables to unambiguously discriminate between the one-particle and the two-particles processes occurring in the helical liquid for both tunneling or weak-backscattering regimes.

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J. -R. Souquet, P. Simon. 2012-08-03. Finite frequency noise in a quantum point contact between helical edge states. https://doi.org/10.1103/physrevb.86.161410

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