Quantum Transport in Presence of Bound States -- Noise Power

Abstract

The impact of bound states in Landauer-Buttiker scattering approach to non-equilibrium quantum transport is investigated. We show that the noise power at frequency $\nu$ is sensitive to all bound states with energies ${\omega }_b$ satisfying $|{\omega }_b|<\nu$. We derive the exact expression of the bound state contribution and compare it to the one produced by the scattering states alone. It turns out that the bound states lead to specific modifications of both space and frequency dependence of the total noise power. The theoretical and experimental consequences of this result are discussed.

LaTex 1+11 pages, 4 figures

References in corpus (6)

• Quantum limit of heat flow across a single electronic channel
• Observation of neutral modes in the fractional quantum Hall regime
• Frequency-dependent current correlation functions from scattering theory
• Local noise in a diffusive conductor
• Current noise cross correlation mediated by Majorana bound states
• Spin Hall noise

Cited by in corpus (4)

• Coherent Transport in Periodically Driven Mesoscopic Conductors: From Scattering Matrices to Quantum Thermodynamics
• Quantum Fluctuations of Entropy Production for Fermionic Systems in Landauer-Buttiker State
• Microscopic Features of Bosonic Quantum Transport and Entropy Production
• Entanglement entropies of an interval in the free Schrödinger field theory on the half line