Sympathetic Sideband Cooling  Of Cah+

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https://hdl.handle.net/2142/51076

Title: Sympathetic Sideband Cooling Of Cah+
Author(s): Rugango, Rene
Contributor(s): Brown, Kenneth R.
Issue Date: 2014-06-19
Keyword(s): Cold/Ultra-cold/Physics
Abstract: We demonstrate sympathetic Doppler cooling and our progress towards sideband cooling of a CaH$^{+}$ ion co-trapped with a Ca$^{+}$ atomic ion in a linear Paul trap. Molecular ions are generally difficult to laser cool due to a lack of closed electronic transitions as a result of vibrational and rotational states. Despite this challenge, they can be cooled indirectly through their Coulombic interaction with a fluorescent atomic ion that is being directly laser cooled. Ions are firstly Doppler cooled to get to the Lamb-Dicke regime, where the ion motion is small relative to the excitation wavelength and then sideband cooled reaching temperatures below 1 $\mu$K. All the ions' axial modes (center of mass and breathing mode) and radial modes ( two center of mass and two tilt modes) are addressed, and the temperature is determined by examining the ratio of sidebands.
Publisher: International Symposium on Molecular Spectroscopy
Type of Resource: text
Language: English
Permalink: http://hdl.handle.net/2142/51076
DOI: https://doi.org/10.15278/isms.2014.RH09
Copyright and License Information: Copyright 2014 by the authors. Licensed under a Creative Commons Attribution 4.0 International License. http://creativecommons.org/licenses/by/4.0/