Results 21 to 30 of about 119,845 (269)
Improved Accuracy for Measurement of Filament Diameter Based on Image-Based Fitting Method
Photonics, 2022 Laser diffraction (LD) has many obvious advantages for measuring. However, the measurement accuracy is limited by a number of factors, such as imaging noise, sensor threshold, and fitting methods.
Yingpeng Zhao +7 more
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Measuring Quantum Entropy [PDF]
2019 IEEE International Symposium on Information Theory (ISIT), 2019 The entropy of a quantum system is a measure of its randomness, and has applications in measuring quantum entanglement. We study the problem of measuring the von Neumann entropy, $S(ρ)$, and Rényi entropy, $S_α(ρ)$ of an unknown mixed quantum state $ρ$ in $d$ dimensions, given access to independent copies of $ρ$.
Jayadev Acharya +3 more
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Formation of strain-induced quantum dots in gated semiconductor nanostructures
AIP Advances, 2015 A long-standing mystery in the field of semiconductor quantum dots (QDs) is: Why are there so many unintentional dots (also known as disorder dots) which are neither expected nor controllable. It is typically assumed that these unintentional dots are due
Ted Thorbeck, Neil M. Zimmerman
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A Simplified Laser System for Atom Interferometry Based on a Free-Space EOM
Photonics, 2022 In this paper, a compact laser system for 87Rb atom interferometry based on only one free-space electro-optic modulator (EOM) was realized, where repumping and Raman beams were generated with a free-space EOM.
Bin Wu +10 more
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Frontiers in Neuroscience, 2021 Dynamic susceptibility contrast-enhanced magnetic resonance imaging is an important tool for evaluating intravascular indicator dynamics, which in turn is valuable for understanding brain physiology and pathophysiology.
Zhenghui Hu +5 more
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What quantum measurements measure [PDF]
Physical Review A, 2017 29 pages, 5 figures. Similar to published version. Only significant change from v1 is the added paragraph at the end of Sec. V E, plus added Refs. [30], [42]
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Quantum measurements with a quantum computer
, 1997 9 pages, 3 figures ...
D'Helon, C., Milburn, Gerard J.
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QUANTUM MECHANICS AS QUANTUM MEASURE THEORY [PDF]
Modern Physics Letters A, 1994 The additivity of classical probabilities is only the first in a hierarchy of possible sum rules, each of which implies its successor. The first and most restrictive sum rule of the hierarchy yields measure theory in the Kolmogorov sense, which is appropriate physically for the description of stochastic processes such as Brownian motion.
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Universal Quantum Measurements [PDF]
Journal of Physics: Conference Series, 2015 We introduce a family of operations in quantum mechanics that one can regard as "universal quantum measurements" (UQMs). These measurements are applicable to all finite-dimensional quantum systems and entail the specification of only a minimal amount of structure.
Brody, DC, Hughston, LP
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Time in Quantum Measurement [PDF]
Entropy, 2006 Based on a model of quantum measurement we derive an estimate for the external measurement-time. Some interesting consequences will be analyzed.
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