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Physics

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Displaying 451 - 475 of 2493

Experimental Realization of Neutron Helical Waves

May 11, 2022
Author(s)
Michael G. Huber, Charles W. Clark, Dmitry Pushin, Connor Kapahi, Lisa DeBeer-Schmitt, David Cory, Huseyin Ekinci, Melissa Henderson, Dusan Sarenac
Methods of preparation and analysis of structured waves of light, electrons, and atoms have been advancing rapidly. Despite the proven power of neutrons for material characterization and studies of fundamental physics, neutron science has not been able to

Measurements of Absolute, SI-traceable Lunar Irradiance with the Airborne LUnar Spectral Irradiance (air-LUSI) Instrument

May 5, 2022
Author(s)
John T. Woodward IV, Kevin Turpie, Thomas Stone, S. Andrew Gadsden, Andrew Newton, Stephen Maxwell, Steven Grantham, Thomas Larason, Steven W. Brown
The Airborne LUnar Spectral Irradiance (Air-LUSI) instrument is designed to make low uncertainty, hyperspectral measurements of the lunar spectral irradiance from an ER-2 aircraft from altitudes above 95 % to 99 % of the atmosphere. Measurements cover the

Critically Evaluated Spectral Data for Singly Ionized Carbon (C II)

May 4, 2022
Author(s)
Alexander Kramida, K. Haris
All available experimental data on the spectrum of singly ionized carbon have been critically analyzed. Measurement uncertainties of all published studies have been re-assessed. The scope of observational data includes laboratory emission spectra of arcs

Entanglement Thresholds of Doubly Parametric Quantum Transducers

April 29, 2022
Author(s)
Curtis Rau, Akira Kyle, Alexander T. Kwiatkowski, Ezad Shojaee, John Teufel, Konrad Lehnert, Tasshi Dennis
Doubly parametric quantum transducers, such as electro-optomechanical devices, show promise for providing the critical link between quantum information encoded in highly disparate frequencies such as in the optical and microwave domains. This technology

Quantum phase modulation with acoustic cavities and quantum dots

April 29, 2022
Author(s)
Poolad Imany, Zixuan Wang, Ryan DeCrescent, Robert Boutelle, Corey McDonald, Travis Autry, Samuel Berweger, Pavel Kabos, Sae Woo Nam, Richard Mirin, Kevin L. Silverman
Fast, efficient, and low-power modulation of light at microwave frequencies is crucial for chip-scale classical and quantum processing as well as for long-range networks of superconducting quantum processors. A successful approach to bridge the gap between

Chiral central charge from a single bulk wave function

April 28, 2022
Author(s)
Isaac H. Kim, Bowen Shi, Kohtaro Kato, Victor Albert
A (2+1)-dimensional gapped quantum many-body system can have a topologically protected energy current at its edge. The magnitude of this current is determined entirely by the temperature and the chiral central charge c_-, a quantity associated with the

Update of Atomic Data for the First Three Spectra of Actinium

April 22, 2022
Author(s)
Alexander Kramida
Abstract: The present article describes a complete re-analysis of all published data on observed spectral lines and energy levels of the first three spectra of actinium (Ac I–III). In Ac I, three previously determined energy levels have been rejected, 12

High-fidelity indirect readout of trapped-ion hyperfine qubits

April 21, 2022
Author(s)
Stephen Erickson, Jenny Wu, Panyu Hou, Daniel Cole, Shawn Geller, Alexander Kwiatkowski, Scott Glancy, Emanuel Knill, Daniel Slichter, Andrew C. Wilson, Dietrich Leibfried
We propose and demonstrate a protocol for high-fidelity indirect readout of trapped ion hyperfine qubits, where the state of a 9Be+ qubit ion is mapped to a 25Mg+ readout ion using laser-driven Raman transitions. By partitioning the 9Be+ ground-state

Bipolar Waveform Synthesis with an Optically Driven Josephson Arbitrary Waveform Synthesizer

April 19, 2022
Author(s)
Justus Brevik, Dahyeon Lee, Anna Fox, Yiwei Peng, Akim Babenko, Joe Campbell, Paul Dresselhaus, Franklyn Quinlan, Samuel P. Benz
An array of Josephson junctions (JJs) was driven with photonically generated current pulses to synthesize a high-fidelity 1 kHz bipolar voltage waveform with a quantum-based amplitude that can be directly related to fundamental constants. A photodiode

Quantum computing hardware for HEP algorithms and sensing

April 19, 2022
Author(s)
Corey Rae McRae
Quantum information science harnesses the principles of quantum mechanics to realize computational algorithms with complexities vastly intractable by current computer platforms. Typical applications range from quantum chemistry to optimization problems and

Accelerated Green's function molecular dynamics

April 16, 2022
Author(s)
Vitor R. Coluci, Socrates de Oliveira Dantas Dantas, Vinod Tewary
A Green's function formalism has been applied to solve the equations of motion in classical molecular dynamics simulations. This formalism enables larger time scales to be probed for vibration processes in carbon nanomaterials. In Green's function

Inhomogenous Light Shifts of Coherent Population Trapping Resonances

April 13, 2022
Author(s)
Juniper Pollock, Valera Yudin, Alexey Taichenachev, Maxim Basalaev, D Kovalenko, Azure Hansen, John Kitching, William McGehee
Coherent population trapping (CPT) in atomic vapors using all-optical interrogation has enabled the miniaturization of microwave atomic clocks. Light shifts induced by the CPT driving elds can impact the spectral pro le of CPT resonances and are a common
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