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

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.

5 pages, 5 figures

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Cited by in corpus (13)

• Tunnel junction of helical edge states: Determining and controlling spin-preserving and spin-flipping processes through transconductance
• Current noise from a magnetic moment in a helical edge
• Z2 peak of noise correlations in a quantum spin Hall insulator
• Spin-orbit interactions in a helical Luttinger liquid with a Kondo impurity
• Noise and current correlations in tunnel junctions of Quantum Spin Hall edge states
• Nonequilibrium noise correlations in a point contact of helical edge states
• Dynamical Coulomb Blockade in an interacting 1D system coupled to an arbitrary environment
• Effects of disorder on electron tunneling through helical edge states
• Edge Physics of the Quantum Spin Hall Insulator from a Quantum Dot Excited by Optical Absorption
• Interaction effects in non-equilibrium transport properties of a four-terminal topological corner junction
• Nonequilibrium transport of helical Luttinger liquids through a quantum dot
• Current enhancement through a time dependent constriction in fractional topological insulators
• Anomalous flux periodicity in proximitised quantum spin Hall constrictions