Results 61 to 70 of about 316,191 (283)

Unifying scrambling, thermalization and entanglement through measurement of fidelity out-of-time-order correlators in the Dicke model

Nature Communications, 2019
The scrambling of quantum information in a many-body system leads to the emergence of statistical mechanics and chaotic behaviour. Here the authors establish quantitative relationships between experimentally-measureable correlators, the Rényi entropy and
R. J. Lewis-Swan, A. Safavi-Naini, J. J. Bollinger, A. M. Rey   +3 more
doaj   +1 more source

Characterization of Sub-Monolayer Contaminants at the Regrowth Interface in GaN Nanowires Grown by Selective-Area Molecular Beam Epitaxy

Crystals, 2018
While GaN nanowires (NWs) offer an attractive architecture for a variety of nanoscale optical, electronic, and mechanical devices, defects such as crystal polarity inversion domains (IDs) can limit device performance.
Paul Blanchard, Matt Brubaker, Todd Harvey, Alexana Roshko, Norman Sanford, Joel Weber, Kris A. Bertness   +6 more
doaj   +1 more source

NIST mechanisms for disseminating measurements

Journal of Research of the National Institute of Standards and Technology, 2001
The national responsibilities assigned to the National Bureau of Standards (NBS) early in the last century for providing measurement assistance and service are carried out today by the four programs that comprise the National Institute of Standards and Technology (NIST) Office of Measurement Services (OMS).
Gills, T. E., Dittman, S., Rumble, J. R., Brickenkamp, C. S., Harris, G. L., Trahey, N. M.   +5 more
openaire   +2 more sources

Chronic Hypoxia Disrupts Spermatogenesis Through ASXL2–EZH2–Mediated Microtubule Destabilization

Advanced Science, EarlyView.
This study reveals the mechanism by which chronic hypoxia impairs spermatogenesis via the ASXL2–EZH2 axis, hindering the transition of spermatids from round to elongated forms. Key findings reveal that under hypoxic conditions, downregulated ASXL2 expression reduces EZH2 binding to the CEP162 promoter, leading to decreased H3K27me3 modification and ...
Jun Yin, Mengjie Zhang, Wenying Liu, Wenlong Shen, Debao Li, Hongming Miao, Fang Deng, Gang Zhang, Yi Tian, Yi Zhang, Zhihu Zhao, Bing Ni   +11 more
wiley   +1 more source

Author Correction: Unifying scrambling, thermalization and entanglement through measurement of fidelity out-of-time-order correlators in the Dicke model

Nature Communications, 2019
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
R. J. Lewis-Swan, A. Safavi-Naini, J. J. Bollinger, A. M. Rey   +3 more
doaj   +1 more source

Efficient chip-based optical parametric oscillators from 590 to 1150 nm

APL Photonics, 2022
Optical parametric oscillators are widely used to generate coherent light at frequencies not accessible by conventional laser gain. However, chip-based parametric oscillators operating in the visible spectrum have suffered from pump-to-signal conversion ...
Jordan R. Stone, Xiyuan Lu, Gregory Moille, Kartik Srinivasan   +3 more
doaj   +1 more source

Twin-photon techniques for fiber measurements [PDF]

, 1998
The potential of twin photons generated by parametric down-conversion for metrological applications are discussed. We present several experimental results like the measurement of chromatic dispersion and polarization mode dispersion in optical fibers ...
Brendel, J., Gisin, H., Muller, A., Sergienko, A., Zbinden, H.   +4 more
core   +1 more source

Physical Origin of Temperature Induced Activation Energy Switching in Electrically Conductive Cement

Advanced Science, EarlyView.
The temperature‐induced Arrhenius activation energy switching phenomenon of electrical conduction in electrically conductive cement originates from structural degradation within the biphasic ionic‐electronic conduction architecture and shows percolation‐governed characteristics: pore network opening dominates the low‐percolation regime with downward ...
Jiacheng Zhang, Xinyuan Ke, Andrew Heath, Richard J. Ball, Jiawei Xie, Jinchen Fan, Guisheng Li, Kevin Paine   +7 more
wiley   +1 more source

Accuracy of magnetic resonance based susceptibility measurements

AIP Advances, 2017
Magnetic Resonance Imaging (MRI) is increasingly used to map the magnetic susceptibility of tissue to identify cerebral microbleeds associated with traumatic brain injury and pathological iron deposits associated with neurodegenerative diseases such as ...
Hannah E. Erdevig, Stephen E. Russek, Slavka Carnicka, Karl F. Stupic, Kathryn E. Keenan   +4 more
doaj   +1 more source

Corrections of the NIST Statistical Test Suite for Randomness [PDF]

, 2004
It is well known that the NIST statistical test suite was used for the evaluation of AES candidate algorithms. We have found that the test setting of Discrete Fourier Transform test and Lempel-Ziv test of this test suite are wrong.
Hasegawa, Akio, Kim, Song-Ju, Umeno, Ken
core   +2 more sources