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Physics

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Displaying 1 - 25 of 2552

Three-dimensional scene reconstruction using Roman slitless spectra

January 14, 2026
Author(s)
Tri Astraatmadja, Andrew Fruchter, Susana Deustua, Helen Qu, Masao Sako
The \Romanc} Space Telescope will carry out a wide-field imaging and slitless spectroscopic survey of TypeIa Supernovae to achieve one of its main goals, improving our understanding of dark energy. Crucial to this endeavor is obtaining a spectra of the

Development of Silicon Micromachined Waveguide Filter-Banks for On-Chip Spectrometers

January 12, 2026
Author(s)
Matthew Koc, Jason Austermann, James Beall, Johannes Hubmayr, Michael Vissers, Jordan Wheeler
Development of high-speed, spatial-mapping spectrometers in the millimeter and far-infrared frequencies would enable entirely new research avenues in astronomy and cosmology. An "on-chip" spectrometer is one such technology that could enable Line Intensity

Optical clock frequency ratios with uncertainty ? 3.2 * 10^-18

January 6, 2026
Author(s)
Alexander Aeppli, Willa Arthur-Dworschack, Kyle Beloy, Caitlin Berry, Tobias Bothwell, Angela Folz, Tara Fortier, Tanner Grogan, Youssef Hassan, Zoey Zimeng Hu, David Hume, Benjamin Hunt, Kyungtae Kim, Amanda Koepke, Dahyeon Lee, David Ray Leibrandt, Ben Lewis, Andrew Ludlow, Mason Marshall, Nicholas Nardelli, Harikesh Ranganath, Daniel Rodriguez Castillo, Jeffrey Sherman, Jacob Siegel, Suzanne Thornton, William Warfield, Jun Ye
We report high-precision frequency ratio measurements between optical atomic clocks based on 27Al+, 171Yb, and 87Sr. With total fractional uncertainties at or below 3.2 × 10−18, these measurements meet the milestone criteria for redefinition of the second

Light shift suppression in a CPT magnetometer using linear polarization and double frequency interrogation

December 30, 2025
Author(s)
Mario Alberto Gonzalez Maldonado, Yang Li, Jamie McKelvy, Andrey Matsko, Irina Novikova, Eugeniy Mikhailov, John Kitching, Ying-Ju Wang
We demonstrate a suppression of the light shift in a Coherent-Population-Trapping (CPT) atomic magnetometer by using linearly polarized light and a differential measurement between magnetic resonances. The radio frequency that creates the optical sidebands

Topological Nodal Line and Weyl Magnons in the Non-Coplanar Antiferromagnet MnTe2

December 20, 2025
Author(s)
Angela Hight Walker, Thuc Mai, Kevin Garrity
Using a combination of band representation analysis, inelastic neutron scattering (INS), magneto-Raman spectroscopy measurements, and linear spin wave theory, we determine that the non-coplanar antiferromagnet MnTe2 hosts symmetry-protected topological

Detection of molecular hydrogen in a neutron beam lifetime experiment

December 12, 2025
Author(s)
Jimmy Caylor, Ripan Biswas, Bret Crawford, Maynard Dewey, Nadia Fomin, Geoffrey Greene, Shannon Hoogerheide, Jose Hungria-Negron, Hans Mumm, Jeffrey Nico, Daniel Valete, Fred Wietfeldt, Joseph Zuchegno
One method of determining the free neutron lifetime involves the absolute counting of neutrons and trapped decay protons. In such experiments, a cold neutron beam traverses a segmented proton trap inside a superconducting solenoid while the neutron flux is

Selecting the complexity of the Moore-Penrose pseudoinverse for emission ghost imaging

December 2, 2025
Author(s)
Kevin Coakley, Huaiyu Chen-Mayer, Bruce Ravel, Daniel Josell, Nikolai Klimov, Daniel Hussey
We reconstruct X-ray fluorescence signals produced by synchrotron X-rays. In our method, we select the complexity of a Moore-Penrose pseudoinverse by a data-driven method, and study how systematic errors affect results for simulated data.

A comparative study of time on Mars with lunar and terrestrial clocks

December 1, 2025
Author(s)
Neil Ashby, Bijunath Patla
As space exploration extends into cislunar space and further towards Mars, understanding the relativistic effects on clocks on Mars—particularly in relation to multi-body gravitational influences—becomes increasingly important for accurate clock

Towards a quantum repeater using a surface-trap-integrated microcavity and trapped ions

November 18, 2025
Author(s)
Lindsay Sonderhouse, Margaret Bruff, Kaitlyn David, Daniel Slichter, Dietrich Leibfried
Trapped ions are a leading candidate for the "stationary qubits" of a quantum network. However, thus far remote entanglement rates have primarily been limited by low photon collection efficiency. In this work, we propose an architecture for a long-range

Compatibility of trapped ions and dielectrics at cryogenic temperatures

November 17, 2025
Author(s)
Margaret Bruff, Lindsay Sonderhouse, Kaitlyn David, Daniel Slichter, Dietrich Leibfried, Jules Stuart
We study the impact of an unshielded dielectric\textemdash here, a bare optical fiber\textemdash on a $^40}$Ca$^+}$ ion held several hundred $\mu$m away in a cryogenic surface electrode trap. We observe distance-dependent stray electric fields of up to a
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