Results 21 to 30 of about 1,506,972 (275)

Qubit metrology and decoherence [PDF]

open access: yes, 2007
Quantum properties of the probes used to estimate a classical parameter can be used to attain accuracies that beat the standard quantum limit. When qubits are used to construct a quantum probe, it is known that initializing $n$ qubits in an entangled ...
A. S. Holevo   +12 more
core   +1 more source

Uncertainty characteristics of generalized quantum measurements [PDF]

open access: yes, 2002
The effects of any quantum measurement can be described by a collection of measurement operators {M_m} acting on the quantum state of the measured system.
A. Einstein   +14 more
core   +2 more sources

Accuracy Improvement of Real-Time Load-Pull Measurements [PDF]

open access: yes, 2007
This paper describes a new procedure aimed to improve the effectiveness of real-time load-pull calibration. Loadpull measurement accuracy is strongly affected by calibration residual uncertainty.
Ferrero, Andrea Pierenrico   +3 more
core   +1 more source

Uncertainty in Measurement [PDF]

open access: yes, 2020
Measurements of physical quantities are the corner stone upon which we humans have built the scientific perception of the world. Measurements are the distinctive means to tell the scientific truth apart from any other approach to knowledge. The fundamental concepts of measurement and uncertainty in measurement have been analysed with reference to ...
openaire   +3 more sources

Entropic uncertainty and measurement reversibility

open access: yesNew Journal of Physics, 2016
The entropic uncertainty relation with quantum side information (EUR-QSI) from (Berta et al 2010 Nat. Phys. http://dx.doi.org/10.1038/nphys1734 6 http://dx.doi.org/10.1038/nphys1734 ) is a unifying principle relating two distinctive features of quantum ...
Mario Berta   +2 more
doaj   +1 more source

Symbolic computation for evaluation of measurement uncertainty [PDF]

open access: yes, 2007
In recent years, with the rapid development of symbolic computation, the integration of symbolic and numeric methods is increasingly applied in various applications.
Jones, BE, Salleh, MR, Wei, P, Yang, QP
core   +1 more source

Uncertainties of size measurements in electron microscopy characterization of nanomaterials in foods [PDF]

open access: yes, 2015
Electron microscopy is a recognized standard tool for nanomaterial characterization, and recommended by the European Food Safety Authority for the size measurement of nanomaterials in food.
Boxall, A. B. A.   +6 more
core   +1 more source

Drifted Uncertainty Evaluation of a Compact Machine Tool Spindle Error Measurement System

open access: yesMachines
The accurate measurement of spindle errors, especially quasi-static errors, is one of the key issues for the analysis and compensation of machine tool thermal errors in machining accuracy. To quantitatively analyze the influence of the measurement system’
Yubin Huang   +5 more
doaj   +1 more source

Impact of probability distribution on the uncertainty of resistance measurement [PDF]

open access: yesITM Web of Conferences, 2019
The paper presents studies on the influence of probability distributions on the expanded uncertainty of the resistance measurement. Choosing the correct probability distribution is very important to estimate of measurement uncertainty. The paper presents
Szczesny Stanisław   +2 more
doaj   +1 more source

Heisenberg's uncertainty principle [PDF]

open access: yes, 2006
Heisenberg's uncertainty principle is usually taken to express a limitation of operational possibilities imposed by quantum mechanics. Here we demonstrate that the full content of this principle also includes its positive role as a condition ensuring ...
Busch, Paul   +2 more
core   +3 more sources

Home - About - Disclaimer - Privacy