QUANTUM HALL EFFECT: THE FUNDAMENTALS
Journal Title: Metrology and Measurement Systems - Year 2006, Vol 13, Issue 2
Abstract
The basic understanding of the physics behind and the reasons for very high precision of the resistivity ρxy quantisation in integer quantum Hall effect (IQHE) and the application of the effect in metrology to define a quantum resistance standard will be briefly discussed. We also mention some recent proposals concerning the application of the quantum Hall device as an efficient qubit for future quantum computers and end up with few remarks about the contribution of single electron devices to the realisation of standards and quantum metrology which seeks the ways to beat the accuracy of classic measurements.
Authors and Affiliations
KAROL WYSOKIŃSKI
STABILIZED TEMPERATURE MEASUREMENTS BASED ON THERMOOPTIC MEMORY PHENOMENA
Investigations of non-linear phenomena in A2MX4 (where: A - organic cation or ion of alkaline metal, M - metal, X - halogen) crystals with incommensurate phases are very interesting both from scientific and practical poi...
DYNAMICS OF CONTACT THERMOMETRIC SENSORS WITH ELECTRIC OUTPUT AND METHODS OF ITS IMPROVEMENT
The paper deals with selected aspects of modelling dynamic properties of contact thermometric sensors and reducing the dynamic error occurring in measurement of time-variable temperature as well as in measurement of cons...
ON-LINE INSTANTANEOUS FREQUENCY ESTIMATION AND VOLTAGE/CURRENT COHERENT RESAMPLING METHOD
An innovatory on-line method of power system frequency estimation and voltage/current signals resampling is presented. The method is designed to increase the accuracy of power system equivalent harmonic impedance estimat...
CALIBRATION OF REFERENCE STANDARD QUARTZ ROTATING PLATES
An accurate linear polarized optical system for calibrating the quartz plate angles is introduced in this work. The quartz plate parallelism and surface roughness are measured using a phase shifting laser interferometer...
FREQUENCY INDEXES OF RESPIRATION DURING INTERRUPTER EXPERIMENT
A new issue of the respiratory mechanics evaluation by the frequency mode of the interrupter technique is undertaken in the paper. The aim of the computer-aided research is to show the abilities to separate airways and t...