Sympathetic cooling of molecular ion motion to the ground state
We demonstrate sympathetic sideband cooling of a ^40 CaH ^+ molecular ion co-trapped with a ^40 Ca ^+ atomic ion in a linear Paul trap. Both axial modes of the two-ion chain are simultaneously cooled to near the ground state of motion. The center of mass mode is cooled to an average quanta of harmon...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2015-01-01
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| Series: | New Journal of Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1088/1367-2630/17/3/035009 |
| Summary: | We demonstrate sympathetic sideband cooling of a ^40 CaH ^+ molecular ion co-trapped with a ^40 Ca ^+ atomic ion in a linear Paul trap. Both axial modes of the two-ion chain are simultaneously cooled to near the ground state of motion. The center of mass mode is cooled to an average quanta of harmonic motion ${{\bar{n}}_{{\rm COM}}}=0.13\pm 0.03$ , corresponding to a temperature of $12.47\pm 0.03\;\mu {\rm K}$ . The breathing mode is cooled to ${{\bar{n}}_{{\rm BM}}}=0.05\pm 0.02$ , corresponding to a temperature of $15.36\pm 0.01\;\mu {\rm K}$ . |
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| ISSN: | 1367-2630 |