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Atoms
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High-Precision Laser Spectroscopy
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High-Precision Laser Spectroscopy

A special issue of Atoms (ISSN 2218-2004).

Deadline for manuscript submissions: 30 November 2024 | Viewed by 2678

Special Issue Editors

Prof. Samuel M. Brewer

E-Mail Website
Guest Editor
Department of Physics, Colorado State University, Fort Collins, CO 80523, USA
Interests: atomic, molecular, and optical physics; ion trapping; precision measurements; highly charged ions
Prof. Dylan Yost

E-Mail Website
Guest Editor
Department of Physics, Colorado State University, Fort Collins, CO 80523, USA
Interests: atomic, molecular, and optical physics; spectroscopy of simple atoms; precision measurement

Special Issue Information

Dear Colleagues,

Precision measurements in atomic systems allow for the study of fundamental physics at a broad range of energy scales. These experiments are often small-scale (“tabletop”) and provide a complementary approach to new physics searches that occur at high-energy facilities. One area of precision measurement that has seen substantial advances in recent decades is that of high-precision laser spectroscopy. Work in this field has enabled the determination of the values of fundamental constants of nature (i.e., the Rydberg constant), stringent tests of quantum electrodynamics (QED), investigations of fundamental symmetries, and the development of devices such as optical atomic clocks. Specifically, the most accurate determinations of the Rydberg constant and the proton charge radius are set by high-precision laser spectroscopy measurements in atomic and muonic hydrogen. The best limits on the existence of the electron’s electric dipole moment (eEDM) are set by precision laser spectroscopy of cold molecules and molecular ions. More recently, the field has expanded to include so-called quantum-enabled spectroscopy techniques. Techniques such as quantum logic spectroscopy (QLS), which harness the resource of quantum entanglement, have opened the door to the study of exotic systems such as molecular ions and highly charged ions at a level of precision that would not otherwise be possible. In the case of optical atomic clocks, advances in high-precision laser spectroscopy techniques, including QLS, have enabled fractional systematic uncertainties of \({\Delta v / v \approx 10^{-18}}\) to be achieved in ensembles of atoms in optical lattices and individual trapped ions. In this Special Issue, we welcome original and review articles in the field of high-precision laser spectroscopy. Examples of topics include, but are not limited to, new experimental techniques, recent experimental results, theoretical proposals for new experiments and/or spectroscopy schemes, and overview articles on the state of a particular subset of work (i.e., eEDM searches).

Prof. Samuel M. Brewer
Prof. Dylan Yost
Guest Editors

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Atoms is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1500 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • precision measurements
  • laser spectroscopy
  • fundamental constants
  • quantum information science

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Published Papers (1 paper)

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Research

19 pages, 551 KiB  
Article
Prospective Optical Lattice Clocks in Neutral Atoms with Hyperfine Structure
by Tobias Bothwell
Atoms 2024, 12(3), 14; https://doi.org/10.3390/atoms12030014 - 5 Mar 2024
Viewed by 1861
Abstract
Optical lattice clocks combine the accuracy and stability required for next-generation frequency standards. At the heart of these clocks are carefully engineered optical lattices tuned to a wavelength where the differential AC Stark shift between ground and excited states vanishes—the so called ‘magic’ [...] Read more.
Optical lattice clocks combine the accuracy and stability required for next-generation frequency standards. At the heart of these clocks are carefully engineered optical lattices tuned to a wavelength where the differential AC Stark shift between ground and excited states vanishes—the so called ‘magic’ wavelength. To date, only alkaline-earth-like atoms utilizing clock transitions with total electronic angular momentum J=0 have successfully realized these magic wavelength optical lattices at the level necessary for state-of-the-art clock operation. In this article, we discuss two additional types of clock transitions utilizing states with J≠0, leveraging hyperfine structure to satisfy the necessary requirements for controlling lattice-induced light shifts. We propose realizing (i) clock transitions between same-parity clock states with total angular momentum F=0 and (ii) M1/E2 clock transitions between a state with F=0 and a second state with J=1/2, mF=0. We present atomic species which fulfill these requirements before giving a detailed discussion of both manganese and copper, demonstrating how these transitions provide the necessary suppression of fine structure-induced vector and tensor lattice light shifts for clock operations. Such realization of alternative optical lattice clocks promises to provide a rich variety of new atomic species for neutral atom clock operation, with applications from many-body physics to searches for new physics. Full article
(This article belongs to the Special Issue High-Precision Laser Spectroscopy)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Prospective Optical Lattice Clocks In Neutral Atoms WithHyperfine Structure
Author: Bothwell
Highlights: 1) Optical lattice clocks require deep suppression/elimination of vector and tensor shifts arising from the trapping light 2) Bosonic species with specific hyperfine structure provide additional atomic species for clock operation 3) Examples of Mn and Cu are given, including laser cooling 4) Systematic considerations are discussed

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