Related Experiment Video
Updated: Nov 27, 2025

Measurement of Quantum Interference in a Silicon Ring Resonator Photon Source
Published on: April 4, 2017
A Note on the Hierarchy of Quantum Measurement Incompatibilities
Bao-Zhi Sun1, Zhi-Xi Wang2, Xianqing Li-Jost3
1School of Mathematical Sciences, Qufu Normal University, Qufu 273165, China.
Abstract:
The quantum measurement incompatibility is a distinctive feature of quantum mechanics. We investigate the incompatibility of a set of general measurements and classify the incompatibility by the hierarchy of compatibilities of its subsets. By using the approach of adding noises to measurement operators, we present a complete classification of the incompatibility of a given measurement assemblage with n members. Detailed examples are given for the incompatibility of unbiased qubit measurements based on a semidefinite program.
Related Concept Videos
The Uncertainty Principle
Uncertainty in Measurement: Reading Instruments
SI Units: 2019 Redefinition
A standard set of units has been defined...
¹H NMR: Interpreting Distorted and Overlapping Signals
As Δν decreases and the signals move closer, the doublets appear increasingly distorted. The intensities of the inner lines increase at the cost of those of the outer lines as the signals are...
Uncertainty in Measurement: Accuracy and Precision
Interval Level of Measurement
Data measured using the interval scale are similar to ordinal level data because they have a definite arrangement. However, in the interval level of measurement, the differences between data values are meaningful even though the data does not have a starting point.
Temperature is measured using the interval scale. It is measurable data, and the difference between...

