Experimental and theoretical investigation of a multimode cooling scheme using multiple electromagnetically-induced-transparency resonances

authored by: Nils Scharnhorst, Javier Cerrillo, Johannes Kramer, Ian D. Leroux, Jannes B. Wübbena, Alex Retzker, Piet Oliver Schmidt
Abstract: We introduce and demonstrate double-bright electromagnetically-induced-transparency (D-EIT) cooling as an extension to EIT cooling. By involving an additional ground state, two bright states can be shifted individually into resonance for cooling of motional modes of frequencies that may be separated by more than the width of a single EIT cooling resonance. This allows three-dimensional ground-state cooling of a Ca+40 ion trapped in a linear Paul trap with a single cooling pulse. Measured cooling rates and steady-state mean motional quantum numbers for this D-EIT cooling are compared with those of standard EIT cooling as well as concatenated standard EIT cooling pulses for multimode cooling. Experimental results are compared to full-density matrix calculations. We observe a failure of the theoretical description within the Lamb-Dicke regime that can be overcome by a time-dependent rate theory. Limitations of the different cooling techniques and possible extensions to multi-ion crystals are discussed.
Organisation(s): Institute of Quantum Optics
CRC 1227 Designed Quantum States of Matter (DQ-mat)
External Organisation(s): Physikalisch-Technische Bundesanstalt PTB
Technische Universität Berlin
Hebrew University of Jerusalem (HUJI)
Type: Article
Journal: Physical Review A
Volume: 98
ISSN: 2469-9926
Publication date: 08.2018
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Atomic and Molecular Physics, and Optics
Electronic version(s): https://doi.org/10.48550/arXiv.1711.00732 (Access: Open)
https://doi.org/10.1103/PhysRevA.98.023424 (Access: Closed)

BibTeX

@article{7eea3b9f402f483989f7228e4d7a0680,
title = "Experimental and theoretical investigation of a multimode cooling scheme using multiple electromagnetically-induced-transparency resonances",
abstract = "We introduce and demonstrate double-bright electromagnetically-induced-transparency (D-EIT) cooling as an extension to EIT cooling. By involving an additional ground state, two bright states can be shifted individually into resonance for cooling of motional modes of frequencies that may be separated by more than the width of a single EIT cooling resonance. This allows three-dimensional ground-state cooling of a Ca+40 ion trapped in a linear Paul trap with a single cooling pulse. Measured cooling rates and steady-state mean motional quantum numbers for this D-EIT cooling are compared with those of standard EIT cooling as well as concatenated standard EIT cooling pulses for multimode cooling. Experimental results are compared to full-density matrix calculations. We observe a failure of the theoretical description within the Lamb-Dicke regime that can be overcome by a time-dependent rate theory. Limitations of the different cooling techniques and possible extensions to multi-ion crystals are discussed.",
author = "Nils Scharnhorst and Javier Cerrillo and Johannes Kramer and Leroux, {Ian D.} and W{\"u}bbena, {Jannes B.} and Alex Retzker and Schmidt, {Piet Oliver}",
note = "Funding information: The authors would like to thank Nicolas Spethmann for helpful comments on the manuscript. We acknowledge support from the DFG through CRC 1128 (geo-Q), project A03 and CRC 1227 (DQ-mat), project B03, and the state of Lower Saxony, Hannover, Germany, project VWZN2927.",
year = "2018",
month = aug,
doi = "10.48550/arXiv.1711.00732",
language = "English",
volume = "98",
journal = "Physical Review A",
issn = "2469-9926",
publisher = "American Physical Society",
number = "2",
}