U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Physics

Search Publications

Search Title, Abstract, Conference, Citation, Keyword or Author
  • Published Date
Displaying 151 - 175 of 4525

Emission Ghost Imaging: reconstruction with data augmentation

February 1, 2024
Author(s)
Kevin J. Coakley, Heather H. Chen-Mayer, Bruce D. Ravel, Daniel Josell, Nikolai Klimov, Sarah Robinson, Daniel S. Hussey
Ghost Imaging enables 2D reconstruction of an object even though particles transmitted or emitted by the object of interest are detected with a single pixel detector without spatial resolution. This is possible because the incident beam is spatially

Intra-grain local luminescence properties of CdSe0.1Te0.9 Thin Films

December 25, 2023
Author(s)
Ganga Neupane, Behrang Hamadani, David Albin, Joel Duenow, Matthew Reese, Susanna Thon
We report on the local photoluminescence properties of grains and grain boundaries of CdSe0.1Te0.9 thin film deposited by the colossal grain growth method using a wide-field hyperspectral imaging technique. We observed significant variations in the

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

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

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

Branching Fractions and Transition Probabilities for UV Transitions in the Spectrum of Cr II

November 28, 2023
Author(s)
Jacob Ward, Jacqueline Li, Jared Schwartz, Gillian Nave, Ton Raassen, Peter H. M. Uylings
We present transition probabilities for 268 spectral lines of singly-ionized chromium (Cr II) in the wavelength region 208 nm to 414 nm. Branching fractions were measured in archival Fourier transform spectra of chromium-argon and chromium-neon hollow