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Physics

Atomic / Molecular / Quantum

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Displaying 76 - 100 of 666

Quantum Scattering of Icosahedron Fullerene C_60} with Noble-Gas Atoms

April 22, 2024
Author(s)
Eite Tiesinga, Jacek Klos, Svetlana Kotochigova
There exist multiple ways to cool neutral molecules. A front runner is the technique of buffer gas cooling, where momentum-changing collisions with abundant cold noble-gas atoms cool the molecules. This approach can, in principle, produce the most diverse

Benford's law in atomic spectra and opacity databases

April 21, 2024
Author(s)
Yuri Ralchenko, Jean-Christophe Pain
The intriguing law of anomalous numbers, also named Benford's law, states that the significant digits of data follow a logarithmic distribution favoring the smallest values. In this work, we test the compliance with this law of the atomic databases

Laser cooling 88Sr to microkelvin temperature with an integrated-photonics system

April 19, 2024
Author(s)
Andrew Ferdinand, Zheng Luo, Sindhu Jammi, Zachary Newman, Grisha Spektor, Okan Koksal, Akash Rakholia, Daniel Sheredy, Parth Patel, Travis Briles, Wenqi Zhu, Martin Machai Boyd, Amit Agrawal, Scott Papp
We report on experiments generating a magneto-optical trap (MOT) of 88-strontium (88Sr) atoms at microkelvin temperature, using integrated-photonics devices. With metasurface optics integrated on a fused-silica substrate, we generate six-beam, circularly p

Experimental speedup of quantum dynamics through squeezing

April 17, 2024
Author(s)
Shaun Burd, Hannah Knaack, Raghavendra Srinivas, Christian Arenz, Alejandra Collopy, Laurent Stephenson, Andrew C. Wilson, David Wineland, Dietrich Leibfried, John J. Bollinger, David Allcock, Daniel Slichter
We show experimentally that a broad class of interactions involving quantum harmonic oscillators can be made stronger (amplified) using a unitary squeezing protocol. While our demonstration uses the motional and spin states of a single trapped $^25}$Mg$^+}

Collision-resolved pressure sensing

April 11, 2024
Author(s)
Daniel Carney, Daniel Barker, Thomas W. LeBrun, David Moore, Jacob Taylor
Heat and pressure are ultimately transmitted via quantized degrees of freedom, like gas particles and phonons. While a continuous Brownian description of these noise sources is adequate to model measurements with relatively long integration times

Indirect Cooling of Weakly Coupled Trapped-Ion Mechanical Oscillators

April 2, 2024
Author(s)
Panyu Hou, Jenny Wu, Stephen Erickson, Giorgio Zarantonello, Adam Brandt, Daniel Cole, Andrew C. Wilson, Daniel Slichter, Dietrich Leibfried
Cooling the motion of trapped ions to near the quantum ground state is crucial for many ap- plications in quantum information processing and quantum metrology. However, some motional modes of trapped ions are difficult to cool because they only interact

Atomic and Molecular Databases Open Science for a sustainable world

March 19, 2024
Author(s)
Yuri Ralchenko, Marie-Lise Dubernet, Bruce Berriman, Paul Barklem, K Choi, Adam Foster, Iouli Gordon, Christian Hill, J Kim, DH Kwon, Harold Linnartz, Farid Salama, Hanna Shmagun, P Schilke, D Seo, J Shim, S Shin, Mi-Yong Song, Jonathan Tennyson, Charlotte VASTEL
The building of online atomic and molecular databases for astrophysics and for other research fields started with the beginning of the internet. These databases have encompassed different forms: databases of individual research groups exposing their own

Increased instantaneous bandwidth of Rydberg atom electrometry with an optical frequency comb probe

February 27, 2024
Author(s)
Aly Artusio-Glimpse, David Long, Sean Bresler, Nik Prajapati, Dangka Shylla, Andrew Rotunno, Matt Simons, Samuel Berweger, Noah Schlossberger, Thomas W. LeBrun, Christopher L. Holloway
We show that the use of a probe optical frequency comb leads to dramatically improved bandwidth (as high as 12+/-1 MHz) for the detection of modulated radio frequencies in Rydberg atom-based electrometry.

Stationary solitary waves in F = 1 spin-orbit-coupled Bose-Einstein condensates

February 27, 2024
Author(s)
Ian Spielman, Amilson Fritsch, Panayotis Kevrekidis, T. Mithun, G. Koutsokostas, D. Frantzeskakis
We consider solitonic excitations above the ground state of $F=1$ spin orbit coupled Bose-Einstein condensates (SOBECs). The low energy properties of SOBECs in any of the three branches of the single particle dispersion relation can be described by

Zeeman-resolved Autler-Townes splitting in Rydberg atoms with a tunable RF resonance and a single transition dipole moment

February 21, 2024
Author(s)
Noah Schlossberger, Drew Rotunno, Aly Artusio-Glimpse, Nik Prajapati, Samuel Berweger, Dangka Shylla, Matt Simons, Christopher L. Holloway
Applying a magnetic field as a method for tuning the frequency of Autler-Townes splitting for Rydberg electrometry has recently been demonstrated. In this Letter, we provide a theoretical understanding of Rydberg electromechanically-induced-transparency

Zeeman effect in the weak and intermediate field regime of Kr isotopes at the linear plasma device PSI-2

February 16, 2024
Author(s)
Yuri Ralchenko, DIPTI DIPTI, Oleksandr Marchuk, Marc Sackers, Stephan Ertmer, Sebastijan Brezinsek, Arkadi Kreter
Laser absorption spectroscopy provides high-resolution spectra of atomic transitions that reveal many often inaccessible nuances. Correctly analyzing the absorption spectra is impossible without accurately capturing the line shape. We demonstrate in this
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