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Variance-based Uncertainty Relation for Incompatible Observers by Zheng, Xiao; Zhang, Guo-Feng is a scholarly article available to read on EtoBox.

What is Variance-based Uncertainty Relation for Incompatible Observers about?

Based on mixedness definition as M=1-tr(\r{ho}^2), we obtain a new variance-based uncertainty equality along with an inequality for Hermitian operators of a single-qubit system. The obtained uncertainty equality can be used as a measure of the system mixedness. A qubit system with feedback control is also exploited to demonstrate the new uncertainty.

Author

Zheng, Xiao; Zhang, Guo-Feng

Published

2017

Language

EN