Related Experiment Video
Updated: May 14, 2026

Quantum State Engineering of Light with Continuous-wave Optical Parametric Oscillators
Published on: May 30, 2014
Shot-noise thermometry of the quantum Hall edge States
Ivan P Levkivskyi1, Eugene V Sukhorukov
1Département de Physique Théorique, Université de Genève, CH-1211 Genève 4, Switzerland.
Abstract:
We use the nonequilibrium bosonization technique to investigate the effects of the Coulomb interaction on quantum Hall edge states at a filling factor ν=2, partitioned by a quantum point contact (QPC). We find that, due to the integrability of charge dynamics, edge states evolve to a nonequilibrium stationary state with a number of specific features. In particular, the noise temperature Θ of a weak backscattering current between edge channels is linear in voltage bias applied at the QPC, independently of the interaction strength. In addition, it is a nonanalytical function of the QPC transparency T and scales as Θ proportional Tln(1/T) at T << 1. Our predictions are confirmed by exact numerical calculations.
Related Concept Videos
The Hall Effect
Atomic Nuclei: Nuclear Spin State Population Distribution
Atomic Spectroscopy: Effects of Temperature
At thermal equilibrium, the relative populations of excited and ground state atoms can be estimated using the Maxwell–Boltzmann distribution. For example, an increase in temperature from...
The de Broglie Wavelength
Quantifying Heat
Atomic Nuclei: Nuclear Spin State Overview
