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Displaying 11101 - 11125 of 73893

Using Radiation Pressure to Develop a Radio-Frequency Power Measurement Technique Traceable to the Redefined SI

October 15, 2018
Author(s)
Christopher L. Holloway, Matthew T. Simons, David R. Novotny, John H. Lehman, Paul A. Williams, Gordon A. Shaw
We discuss a power measurement technique traceable to the International System of Units based on radiation pressure (or radiation force) carried by an electromagnetic wave. A measurement of radiation pressure offers the possibility for a power measurement

On-Wafer Transistor Characterization to 750 GHz -the approach, results, and pitfalls

October 14, 2018
Author(s)
Dylan Williams, Jerome Cheron, Ben Jamroz, Richard Chamberlin
We review approaches developed at the National Institute of Standards and Technology for on-wafer transistor characterization and model extraction at sub-millimeter-wave wavelengths, and compare them to more common approaches developed for use at lower

Circuit designs for superconducting optoelectronic loop neurons

October 12, 2018
Author(s)
Jeffrey M. Shainline, Adam N. McCaughan, Jeffrey T. Chiles, Richard P. Mirin, Sae Woo Nam, Sonia M. Buckley
We present designs of superconducting optoelectronic neurons based on superconducting single- photon detectors, Josephson junctions, semiconductor light sources, and multi-planar dielectric waveguides. The neurons send few-photon signals to synaptic

Co-Operation in Publicly Funded Reference Material Production Meeting Report

October 12, 2018
Author(s)
Steven J. Choquette, Hakan Emteborg, Doris florian, Stephen Ellison, Lindsay Mackay, Pearse McCarron
The meeting was organized by the European Commission's Joint Research Centre, and held at the JRC-Geel site on 22-23 February, 2018. It was a follow-up of a similar meeting held in 2009. The objective of the meeting was to exchange information about

Joint Quantum State and Measurement Tomography with Incomplete Measurements

October 12, 2018
Author(s)
Adam C. Keith, Charles H. Baldwin, Scott C. Glancy, Emanuel H. Knill
Estimation of quantum states and measurements is crucial for the implementation of quantum information protocols. The standard method for each is quantum tomography (QT). However, QT suffers from systematic errors caused by imperfect knowledge of the

Metrology for the next generation of semiconductor devices

October 12, 2018
Author(s)
Ndubuisi G. Orji, Mustafa Badaroglu, Bryan M. Barnes, Carlos Beitia, Benjamin D. Bunday, Umberto Celano, Regis J. Kline, Mark Neisser, Yaw S. Obeng, Andras Vladar
The semiconductor industry continues to produce ever smaller devices that are ever more complex in shape and contain ever more types of materials. The ultimate sizes and functionality of these new devices will be affected by fundamental and engineering

The Center of Excellence for Community Risk-Based Resilience Planning

October 12, 2018
Author(s)
Therese P. McAllister, John W. van de Lindt, Bruce Ellingwood, Walter G. Peacock, Harvey Cutler, Paolo Gardoni, Daniel Cox
Community resilience depends on the performance of the built environment and on supporting social, economic and public institutions which, individually and collectively, are essential for the functioning and recovery of a community following a disaster. A

Boosting Ethane/Ethylene Separation within Isoreticular Ultramicroporous Metal-Organic Frameworks

October 11, 2018
Author(s)
Rui-Biao Lin, Hui Wu, Libo Li, Xiao-Liang Tang, Zhiqiang Li, Junkuo Gao, Hui Cui, Wei Zhou, Banglin Chen
The separation of ethane from its analogous ethylene is of great importance in the petrochemical industry, but very challenging and energy-intensive. Adsorptive separation using C cH 6-selective porous materials can directly produce high purity C 2H 4 in a

Methods for preparation and detection of neutron spin-orbit states

October 10, 2018
Author(s)
Michael G. Huber, D. Sarenac, J. Nsofini, I. Hincks, David Cory, Muhammad D. Arif, Charles W. Clark, D. A. Pushin
The generation and control of neutron orbital angular momentum (OAM) states and spin correlated OAM (spin-orbit) states provides a powerful probe of materials with unique penetrating abilities and magnetic sensitivity. We describe techniques to prepare and

Photonic waveguide to free-space Gaussian beam extreme mode converter

October 10, 2018
Author(s)
Sangsik Kim, Daron Westly, Brian J. Roxworthy, Qing Li, Alexander Yulaev, Kartik Srinivasan, Vladimir Aksyuk
Integration of photonic chips with atomic, micromechanical, chemical and biological systems can advance science and open many possibilities in chip-scale devices and technology. Compact photonic structures for direct coupling of light between high-index

Poisson errors and adaptive rebinning in X-ray Powder Diffraction Data

October 10, 2018
Author(s)
Marcus H. Mendenhall
Abstract This work provides a short summary of techniques for formally-correct handling of statistical uncertainties in Poisson- statistics dominated data. Correct assignment of uncertainties for low counts is documented. We describe a technique for

Effect of device design on charge offset drift in Si/SiO2 single electron devices

October 9, 2018
Author(s)
Binhui Hu, Erick Ochoa, Daniel Sanchez, Justin K. Perron, Neil M. Zimmerman, Michael Stewart
We have measured the low-frequency time instability known as charge offset drift of Si/SiO2 single electron devices (SEDs) with and without an overall poly-Si top gate. We find that SEDs with a poly-Si top gate have significantly less charge offset drift

Randomness Extraction from Bell Violation with Continuous Parametric Down-Conversion

October 9, 2018
Author(s)
Thomas Gerrits, Sae Woo Nam, Adriana Lita, Lijiong Shen, Jianwei Lee, Le Phuc Thinh, Jean-Daniel Bancal, Alessandro Cere
We present a violation of the CHSH inequality without the fair sampling assumption with a continuously pumped photon pairs source combined with two high efficiency superconducting detectors. Due to the continuous nature of the source, the choice of the

Light-induced atomic desorption of lithium

October 8, 2018
Author(s)
Daniel S. Barker, Eric B. Norrgard, Julia K. Scherschligt, James A. Fedchak, Stephen P. Eckel
We demonstrate loading of a Li magneto-optical trap using light-induced atomic desorption. The magneto-optical trap confines up to approximately 10000 lithium atoms with loading rates up to 4000 atoms/s. We study the Li desorption rate as a function of the

Uncertainties in Rydberg Atom-based RF E-field Measurements

October 8, 2018
Author(s)
Matthew T. Simons, Marcus D. Kautz, Joshua A. Gordon, Christopher L. Holloway
A new atom-based electric (E) field measurement approach (using Rydberg atoms) is being investigated by several groups around the world as a means to develop a new SI-traceable RF E- field standard. For this technique to be useful it is important to
Displaying 11101 - 11125 of 73893
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