Results 11 to 20 of about 1,835,350 (291)

Entanglement-free Heisenberg-limited phase estimation [PDF]

Nature, 2007
Measurement underpins all quantitative science. A key example is the measurement of optical phase, used in length metrology and many other applications. Advances in precision measurement have consistently led to important scientific discoveries.
AC Davison, B Yurke, B. L. Higgins, CM Caves, D Leibfried, D. W. Berry, DW Berry, EJS Fonseca, FW Sun, G. J. Pryde, H Lee, H. M. Wiseman, HM Wiseman, HM Wiseman, HS Eisenberg, JG Rarity, JJ Bollinger, K Edamatsu, KJ Resch, M de Burgh, MA Armen, MA Nielsen, MW Mitchell, MW Mitchell, N Schenker, P Walther, RB Griffiths, RL Cook, S. D. Bartlett, T Nagata, T Rudolph, V Giovannetti, V Giovannetti, W van Dam, Z Hradil   +34 more
core   +4 more sources

Robust Gradient Estimator for Unknown Frequency Estimation in Noisy Environment: Application to Grid-Synchronization

IEEE Access, 2020
Grid-connected converters are an important class of power electronic systems. Many power and energy applications require grid-connected converters. To control grid-connected converters, precise information of the grid voltage frequency and phase are ...
Hafiz Ahmed, Ivan Salgado, Isaac Chairez, Mohamed Benbouzid   +3 more
doaj   +1 more source

Investigation of Slow-Moving Artificial Slope Failure with Multi-Temporal InSAR by Combining Persistent and Distributed Scatterers: A Case Study in Northern Taiwan

Remote Sensing, 2020
In Taiwan, landslides pose serious threats to local residents and infrastructures each year due to high mountain relief and distinct seasonal precipitation distribution.
Hongyu Liang, Xin Li, Lei Zhang, Rou-Fei Chen, Xiaoli Ding, Kuo-Long Chen, Chi-Shan Wang, Chia-Shin Chang, Chien-Yu Chi   +8 more
doaj   +1 more source

Low-Impact Current-Based Distributed Monitoring System for Medium Voltage Networks

Energies, 2021
Distribution networks are currently subject to a huge revolution in terms of assets being installed. In particular, the massive spread of renewable energy sources has drastically changed the way of approaching the grid.
Alessandro Mingotti, Lorenzo Peretto, Roberto Tinarelli   +2 more
doaj   +1 more source

Demodulation Type Single-Phase PLL with DC Offset Rejection [PDF]

, 2020
International audienceThis Letter proposes demodulation type PLL for phase and frequency estimation of single‐phase system that can reject DC offset. Using results from the adaptive estimation literature, this Letter proposes a linear parametric model ...
Ahmed, Hafiz, Benbouzid, Mohamed
core   +1 more source

Directional Statistics and Filtering Using libDirectional

Journal of Statistical Software, 2019
In this paper, we present libDirectional, a MATLAB library for directional statistics and directional estimation. It supports a variety of commonly used distributions on the unit circle, such as the von Mises, wrapped normal, and wrapped Cauchy ...
Gerhard Kurz, Igor Gilitschenski, Florian Pfaff, Lukas Drude, Uwe D. Hanebeck, Reinhold Haeb-Umbach, Roland Y. Siegwart   +6 more
doaj   +1 more source

Robust Estimation of Optical Phase Varying as a Continuous Resonant Process [PDF]

, 2013
It is well-known that adaptive homodyne estimation of continuously varying optical phase provides superior accuracy in the phase estimate as compared to adaptive or non-adaptive static estimation.
Huntington, Elanor H., Petersen, Ian R., Roy, Shibdas   +2 more
core   +1 more source

Faster phase estimation

Quantum Information and Computation, 2014
We develop several algorithms for performing quantum phase estimation based on basic measurements and classical post-processing. We present a pedagogical review of quantum phase estimation and simulate the algorithm to numerically determine its scaling in circuit depth and width.
Svore, Krysta M., Hastings, Matthew B., Freedman, Michael   +2 more
openaire   +2 more sources

Entanglement-Enhanced Phase Estimation without Prior Phase Information [PDF]

Physical Review Letters, 2017
We study the generation of planar quantum squeezed (PQS) states by quantum non-demolition (QND) measurement of a cold ensemble of $^{87}$Rb atoms. Precise calibration of the QND measurement allows us to infer the conditional covariance matrix describing the $F_y$ and $F_z$ components of the PQS, revealing the dual squeezing characteristic of PQS.
Colangelo, G., Martin Ciurana, F., Puentes, G., Mitchell, M. W., Sewell, R. J.   +4 more
openaire   +4 more sources

Multitaper estimates of phase-amplitude coupling [PDF]

Journal of Neural Engineering, 2021
AbstractPhase-amplitude coupling (PAC) is the association of the amplitude of a high-frequency oscillation with the phase of a low-frequency oscillation. In neuroscience, this relationship provides a mechanism by which neural activity might be coordinated between distant regions.
Kyle Q Lepage, Cavan N Fleming, Mark Witcher, Sujith Vijayan   +3 more
openaire   +2 more sources