Systematic study of tunable laser cooling for trapped-ion experiments

authored by

A P Kulosa, O N Prudnikov, D Vadlejch, Henning Alexander Fürst, A A Kirpichnikova, A V Taichenachev, V I Yudin, Tanja Mehlstäubler

Abstract

We report on a comparative analysis of quenched sideband cooling in trapped ions. We introduce a theoretical approach for time-efficient simulation of the temporal cooling characteristics and derive the optimal conditions providing fast laser cooling into the ion’s motional ground state. The simulations were experimentally benchmarked with a single

¹⁷²Yb

⁺ ion confined in a linear Paul trap. Sideband cooling was carried out on a narrow quadrupole transition, enhanced with an additional clear-out laser for controlling the effective linewidth of the cooling transition. Quench cooling was thus for the first time studied in the resolved sideband, intermediate and semi-classical regime. We discuss the non-thermal distribution of Fock states during laser cooling and reveal its impact on time dilation shifts in optical atomic clocks.

Organisation(s)

Institute of Quantum Optics

External Organisation(s)

National Metrology Institute of Germany (PTB)
RAS - Institute of Laser Physics
Novosibirsk State University
Novosibirsk State Technical University

Type

Article

Journal

New journal of physics

Volume

Pages

053008

ISSN

1367-2630

Publication date

09.05.2023

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Electronic version(s)

https://doi.org/10.1088/1367-2630/acd13b (Access: Open)

BibTeX

@article{6ce2479986e64ca88d8c3cd919ffb526,
title = "Systematic study of tunable laser cooling for trapped-ion experiments",
abstract = "We report on a comparative analysis of quenched sideband cooling in trapped ions. We introduce a theoretical approach for time-efficient simulation of the temporal cooling characteristics and derive the optimal conditions providing fast laser cooling into the ion{\textquoteright}s motional ground state. The simulations were experimentally benchmarked with a single 172Yb + ion confined in a linear Paul trap. Sideband cooling was carried out on a narrow quadrupole transition, enhanced with an additional clear-out laser for controlling the effective linewidth of the cooling transition. Quench cooling was thus for the first time studied in the resolved sideband, intermediate and semi-classical regime. We discuss the non-thermal distribution of Fock states during laser cooling and reveal its impact on time dilation shifts in optical atomic clocks.",
keywords = "atom kinetics, cooling dynamics, trapped ions, tunable laser cooling",
author = "Kulosa, {A P} and Prudnikov, {O N} and D Vadlejch and F{\"u}rst, {Henning Alexander} and Kirpichnikova, {A A} and Taichenachev, {A V} and Yudin, {V I} and Tanja Mehlst{\"a}ubler",
note = "We thank Jonas Keller for useful comments on optical spectroscopy in the presence of laser noise. This work was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) under German's Excellence Strategy—EXC-2123 QuantumFrontiers—390837967 and by DFG Grant No. ME 3648/5-1. H A F{\"u}rst was supported by the EMPIR project 18SIB05 'Robust Optical Clocks for International Timescales'. The work of O N Prudnikov and A A Kirpichnikova was supported by the Russian Science Foundation (No. 23-22-00198), V I Yudin was supported by the Ministry of Science and Higher Education of the Russian Federation (Grant No. FSUS-2020-0036). A V Taichenachev was supported by the Ministry of Science and Higher Education of the Russian Federation (in the framework of State assignment ILP SB RAS).",
year = "2023",
month = may,
day = "9",
doi = "10.1088/1367-2630/acd13b",
language = "English",
volume = "25",
pages = "053008",
journal = "New journal of physics",
issn = "1367-2630",
publisher = "IOP Publishing Ltd.",
number = "5",
}