Next Article in Journal
Analysis of the Chaotic Behavior of the Lower Hybrid Wave Propagation in Magnetised Plasma by Hamiltonian Theory
Next Article in Special Issue
Discrete Time Dirac Quantum Walk in 3+1 Dimensions
Previous Article in Journal
Magnetically-Driven Quantum Heat Engines: The Quasi-Static Limit of Their Efficiency
Previous Article in Special Issue
Orthogonal Vector Computations
Article Menu

Export Article

Open AccessArticle
Entropy 2016, 18(5), 174;

Quantum Errors and Disturbances: Response to Busch, Lahti and Werner

Centre for Engineered Quantum Systems, School of Physics, The University of Sydney, Sydney, NSW 2006, Australia
Academic Editors: Gregg Jaeger and Andrei Khrennikov
Received: 27 February 2016 / Revised: 25 April 2016 / Accepted: 28 April 2016 / Published: 6 May 2016
Full-Text   |   PDF [351 KB, uploaded 6 May 2016]   |  


Busch, Lahti and Werner (BLW) have recently criticized the operator approach to the description of quantum errors and disturbances. Their criticisms are justified to the extent that the physical meaning of the operator definitions has not hitherto been adequately explained. We rectify that omission. We then examine BLW’s criticisms in the light of our analysis. We argue that, although the BLW approach favour (based on the Wasserstein two-deviation) has its uses, there are important physical situations where an operator approach is preferable. We also discuss the reason why the error-disturbance relation is still giving rise to controversies almost a century after Heisenberg first stated his microscope argument. We argue that the source of the difficulties is the problem of interpretation, which is not so wholly disconnected from experimental practicalities as is sometimes supposed. View Full-Text
Keywords: error disturbance principle; uncertainty principle; quantum measurement; Heisenberg error disturbance principle; uncertainty principle; quantum measurement; Heisenberg

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Appleby, D.M. Quantum Errors and Disturbances: Response to Busch, Lahti and Werner. Entropy 2016, 18, 174.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Entropy EISSN 1099-4300 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top