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Search Publications

NIST Authors in Bold

Displaying 1 - 25 of 2394

DAmodel: Hierarchical Bayesian Modelling of DA White Dwarfs for Spectrophotometric Calibration

December 11, 2024
Author(s)
Benjamin M. Boyd, Gautham Narayan, Kaisey Mandel, Matthew Grayling, Aidan Berres, Mai Li, Aaron Do, ABHIJIT SAHA, Tim Axelrod, Thomas Matheson, Edward W Olszewski, ralph bohlin, Annalisa Calamida, Jenna Claver, Susana Deustua, Jay Holberg, Ivan Hubeny, John MacKenty, Konstantin Malanchev, Sean Points, Armin Rest, Elena Sabbi, Christopher Stubbs
standards (16.5 V 19.5) alongside the three CALSPEC standards, from 900 Å to 32 μm. The framework is the first of its kind to jointly infer photometric zeropoints and WD parameters (log g, Teff, AV , RV ) by simultaneously modelling both photometric and

Activity measurements and calibrations for 225Ac in radioactive equilibrium with its progeny

December 9, 2024
Author(s)
Denis Bergeron, Gulakhshan Hamad, Brittany Broder, Jeffrey Cessna, Adam Pearce, Jerome LaRosa, Leticia Pibida, Brian E. Zimmerman
The massic activity of 225Ac in 0.1 mol/L HCl was measured by multiple primary methods over four consistent measurement campaigns. Results from the triple-to-double coincidence ratio (TDCR) method of liquid scintillation (LS) counting were in accord with

Atomistic Origins of Conductance Switching in an e-Cu0.9V2O5 Neuromorphic Single Crystal Oscillator

December 4, 2024
Author(s)
Cherno Jaye, Conan Weiland, Daniel Fischer, John Ponis, Nicholas Jerla, George Agbeworvi, Saul Perez-Beltran, Nitin Kumar, Kenna Ashen, Jialu Li, Edrick Wang, Michelle A. Smeaton, Fatme Jardali, Sarbajeet Chakraborty, Patrick J. Shamberger, Katherine L. Jungjohann, Lu Ma, Jinghua Guo, G Sambandamurthy, Xiaofeng Qian, Sarbajit Banerjee
: Building artificial neurons and synapses is key to achieving the promise of energy efficiency and acceleration envisioned for brain-inspired information processing. Emulating the spiking behavior of biological neurons in physical materials requires

Kinetic inductance current sensor for visible to near-infrared wavelength transition-edge sensor readout

November 6, 2024
Author(s)
Paul Szypryt, Douglas Bennett, Ian Fogarty Florang, Joseph Fowler, Jiansong Gao, Andrea Giachero, Ruslan Hummatov, Adriana Lita, John Mates, Sae Woo Nam, Daniel Swetz, Joel Ullom, Michael Vissers, Jordan Wheeler
Single-photon detectors based on the superconducting transition-edge sensor are used in a number of visible to near-infrared applications, particularly for photon-number-resolving measurements in quantum information science. To be practical for large-scale

Optical Studies of Silicon Color Centers and CC-LEDs for Consideration as Telecom Quantum Light Sources

October 29, 2024
Author(s)
Nikki Ebadollahi, Pradeep Namboodiri, Vijin Kizhake Veetil, Marcelo Davanco, Kartik Srinivasan, Aaron Katzenmeyer, Matthew Pelton, Joshua Pomeroy
We synthesized and studied color centers on silicon-on-insulator wafers with photoluminescence mapping and spectroscopy, and fabricated silicon W- and G- color center LEDs towards electrically-pumped single photon sources.

Design, modeling, and fabrication of high frequency Oersted lines for electron spin manipulation in silicon based quantum devices

October 25, 2024
Author(s)
Pradeep Namboodiri, Mark-yves Gaunin, Alessandro Restelli, Ranjit Kashid, Xiqiao Wang, Fan Fei, Brian Courts, FNU Utsav, Vijith Kamalon Pulikodan, Jonathan Wyrick, Richard M. Silver
Coherent manipulation of electron spins is one of the central problems of silicon-based quantum computing efforts. Electron spin resonance (ESR) lines, or Oersted lines, allow high frequency RF pulses to induce an electromagnetic field that drives Rabi

Long-lived topological time-crystalline order on a quantum processor

October 17, 2024
Author(s)
Liang Xiang, Wenjie Jiang, Zehang Bao, Zixuan Song, Shibo Xu, Ke Wang, Jiachen Chen, Feitong Jin, Xuhao Zhu, Zitian Zhu, Fanhao Shen, Ning Wang, Chuanyu Zhang, Yaozu Wu, Yiren Zou, Jiarun Zhong, Zhengyi Cui, Aosai Zhang, Ziqi Tan, Tingting Li, Yu Gao, Jinfeng Deng, Xu Zhang, Hang Dong, Pengfei Zhang, Si Jiang, Weikang Li, Zhide Lu, Zheng-Zhi Sun, Hekang Li, Zhen Wang, Chao Song, Alexey Gorshkov, Norman Yao, Thomas Iadecola, Fangli Liu, Zhexuan Gong, Francisco Machado, Qiujiang Guo, H. Wang, Dong-Ling Deng

Fast Ground State to Ground State Separation of Small Ion Crystals

October 10, 2024
Author(s)
Tyler Gugliemo, Dietrich Leibfried, Stephen Libby, Daniel Slichter
Rapid separation of linear crystals of trapped ions into different subsets is critical for realizing trapped ion quantum computing architectures where ions are rearranged in trap arrays to achieve all-to-all connectivity between qubits. We introduce a

Developing Interoperable, Accessible Software via the Atomic, Molecular, and Optical Sciences Gateway: A Case Study of the B-spline atomic R-Matrix code Graphical User Interface

October 3, 2024
Author(s)
Barry I. Schneider, kathryn hamilton, Sudhakar Pamidighantam, Tom Wolcott
The Atomic, Molecular, and Optical Science Gateway\citeamosgateway} is a comprehensive cyber\-infrastructure for research and educational activities in computational AMO science. The \hbox$B$-Spline} atomic \hbox$R$-Matrix} (BSR) suite of programs is

A network of cooler white dwarfs as infrared standards for flux calibration

October 1, 2024
Author(s)
Abbigail Elms, Nicola Gentile Fusillo, Pier-Emmanuel Tremblay, ralph bohlin, Mark Hollands, Snehalata Sahu, Mairi O'Brien, Susana Deustua, Tim Cunningham
The accurate flux calibration of observational data is vital for astrophysics and cosmology because absolute flux uncertainties of stellar standards propagate into scientific results. With the ever higher precision achieved by telescopic missions (e.g. JWS

Phase transition in magic with random quantum circuits

September 23, 2024
Author(s)
Michael Gullans
Maic is a resource that enables quantum computation and quantifies the efficacy of a quantum state for universal fault-tolerant quantum computing. Understanding the mechanisms by which magic is created or destroyed is, therefore, a crucial step towards

Dynamically generated concatenated codes and their phase diagrams

September 20, 2024
Author(s)
Michael Gullans, David Huse, Grace Sommers
We formulate code concatenation as the action of a unitary quantum circuit on an expanding tree geometry and find that for certain classes of gates, applied identically at each node, a binary tree circuit encodes a single logical qubit with code distance

Linking excess entropy and acentric factor in spherical fluids

September 9, 2024
Author(s)
Tae Jun Yoon, Ian Bell
Introduced by Kenneth Pitzer in 1955, the acentric factor (ω) became a standard quantity in chemical thermodynamics, representing a molecule's "shape" effect on the deviation from the corresponding state behavior. Nevertheless, its interpretation remains

Calibration of Autler-Townes based electrometry in Rydberg states of alkali atoms

August 30, 2024
Author(s)
Noah Schlossberger, Nikunjkumar Prajapati, Alexandra Artusio-Glimpse, Samuel Berweger, Matthew Simons, William Watterson, Dangka Shylla, Christopher Holloway
Highly excited states of alkali atoms are a powerful tool for making SI-traceable electric field measurements without the need for an external reference. However, the calibration of these measurements suffers from ambiguity in which transition dipole

Assessing girth weld quality of pipeline steels and their susceptibility to hydrogen embrittlement

August 28, 2024
Author(s)
Zack Buck, Newell Moser, Nicholas Derimow, May Ling Martin, Damian Lauria, Enrico Lucon, Douglas Stalheim, Peter Bradley, Matthew Connolly
Hydrogen has long been considered a viable carbon-free option for ever-increasing societal desires to transform our energy infrastructure towards more renewable and alternative technologies. However, the effects of hydrogen-assisted damage mechanisms that

Calibration for Astrophysics using an Artificial star with NIST-traceable Distribution of Luminous Energy (CANDLE) Instrument Development

August 23, 2024
Author(s)
Joseph P. Rice, Brian Alberding, Susana Deustua, Thinh Bui, Eric Shirley, Keshet Shavit, Eliad Peretz, Daniel Kuesters, Greg Aldering, Dmitry Vorobiev, Jonathan Papa, Justin Albert, Ralph Bohlin, Benjamin Rose, Piotr Pachowicz, Peter Plavchan, Angella Tanner, John Mather, Jean Thomas Landry, Etienne Gauvin, Thomas Michaud=Bayens, Greg Kopp
The CANDLE Engineering Demonstration Unit (EDU) was selected by the 2022 APRA program to develop and demonstrate that we can reach the flux accuracy and range required for an artificial star. A critical issue in producing accurate and reliable flux

Quantum Sensing with Erasure Qubits

August 19, 2024
Author(s)
Pradeep Niroula, Jack Dolde, Xin Zheng, Jacob Bringewatt, Adam Ehrenberg, Kevin Cox, Jeff Thompson, Michael Gullans, Shimon Kolkowitz, Alexey Gorshkov
Displaying 1 - 25 of 2394