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Displaying 2251 - 2275 of 73969

Visualizing the merger of tunably coupled graphene quantum dots

December 6, 2023
Author(s)
Daniel Walkup, Fereshte Ghahari, Steven R. Blankenship, Kenji Watanabe, Takashi Taniguchi, Nikolai Zhitenev, Joseph A. Stroscio
Coupled quantum dots have been realized in a wide variety of physical systems and have attracted interest for many different applications. Here, we examine novel graphene quantum dots in backgated devices on hBN, and visualize their merger using scanning

Bipartite time-energy uncertainty relation for quantum metrology with noise

December 5, 2023
Author(s)
Philippe Faist, Mischa Woods, Victor Albert, Joseph Renes, Jens Eisert, John Preskill
Noise in quantum metrology reduces the sensitivity to which one can determine an unknown parameter in the evolution of a quantum state, such as time. Here, we consider a system prepared in a pure state that evolves according to a given Hamiltonian. We

Heats of Combustion and Related Properties of Pure Substances

December 5, 2023
Author(s)
Donald Burgess, Anthony Hamins
In this work, we compiled and evaluated various properties pertaining to the heats of combustion of about 420 compounds of physical, chemical, and engineering interest. This includes boiling points, melting points, latent heats (enthalpies) of vaporization

Telecom band quantum dot technologies for long-distance quantum networks

December 4, 2023
Author(s)
Ying Yu, Changmin Lee, Peter Michler, Stephan Reitzenstein, Kartik Srinivasan, Edo Waks, Shunfa Liu, Jin Liu
A future quantum internet is expected to generate, distribute, store and process quantum bits (qubits) over the world by linking different quantum nodes via quantum states of light. To facilitate long-haul operations, quantum repeaters must operate at

Elastic Behavior of Orientation-Correlated Grains in Multiphase Aggregates

December 1, 2023
Author(s)
Thomas Gnaupel-Herold
Diffraction elastic constants (DECs) describe the elastic response of a subset of orientation-correlated grains which share a common lattice vector. DECs reflect the elastic behaviour of the single-crystal constituents through their dependence on grain

Extending Explainable Boosting Machines to Scientific Image Data

November 30, 2023
Author(s)
Daniel Schug, Sai Yerramreddy, Rich Caruana, Craig Greenberg, Justyna Zwolak
As the deployment of computer vision technology becomes increasingly common in science, the need for explanations of the system and its output has become a focus of great concern. Driven by the pressing need for interpretable models in science, we propose

Optomechanical feedback cooling of a 5 mm long torsional mode

November 30, 2023
Author(s)
Dianqiang Su, Yuan Jiang, Pablo Solano, Luis Orozco, John R. Lawall, Yanting Zhao
We report three orders of magnitude optical cooling of the fundamental torsional mode of a 5 mm-long, 550 nm diameter optical nanofiber. The rotation of the nanofiber couples to the polarization of guided laser fields. We use a weak laser probe to monitor

2024 Laws Interim Analysis

November 29, 2023
Author(s)
Lisa Warfield, John McGuire
The NIST OWM Analysis is submitted to assist the Weights and Measures community as it deliberates on items before the Conference. NIST OWM offers these comments and recommendations based on information and input available as of the date of this report

Microplastics absent from reef fish in the Marshall Islands: Multistage screening methods reduced false positives

November 29, 2023
Author(s)
Katherine Shaw, Jonathan Whitney, Eileen Nalley, Madeline Schmidbauer, Megan Donahue, Jesse Black, Raquel Corniuk, Kellie Teague, Catherine Pirkle, Rachel Dacks, Max Sudnovsky, Jennifer Lynch
Island communities, like the Republic of the Marshall Islands (RMI), depend on marine resources for food and economics, so plastic ingestion by those resources is a concern. The gastrointestinal tracts of nine species of reef fish across five trophic

Powder Spreading Testbed for Studying the Powder Spreading Process in Powder Bed Fusion Machines

November 29, 2023
Author(s)
Justin Whiting, Eric Whitenton, Aniruddha Das, Vipin Tondare, Jason Fox, Michael McGlauflin, Alkan Donmez, Shawn P. Moylan
The spreading of powder is an integral part of powder bed fusion-based additive manufacturing technologies; however, due to the complex nature and the number of interactions between particles, studying the powder spreading process is difficult. In order to
Displaying 2251 - 2275 of 73969
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