Ground-state cooling of a trapped ion using long-wavelength radiation

We demonstrate ground-state cooling of a trapped ion using radio-frequency (RF) radiation. This is a powerful tool for the implementation of quantum operations, where RF or microwave radiation instead of lasers is used for motional quantum state engineering. We measure a mean phonon number of \(\ove...

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Bibliographic Details
Published in:arXiv.org 2015-06
Main Authors: Weidt, S, Randall, J, Webster, S C, Standing, E D, Rodriguez, A, Webb, A E, Lekitsch, B, Hensinger, W K
Format: Article
Language:English
Subjects:
Cooling
Electrical noise
Heating rate
Microwaves
Radio frequency
Online Access:Get full text
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Summary:We demonstrate ground-state cooling of a trapped ion using radio-frequency (RF) radiation. This is a powerful tool for the implementation of quantum operations, where RF or microwave radiation instead of lasers is used for motional quantum state engineering. We measure a mean phonon number of \(\overline{n} = 0.13(4)\) after sideband cooling, corresponding to a ground-state occupation probability of 88(7)\%. After preparing in the vibrational ground state, we demonstrate motional state engineering by driving Rabi oscillations between the n=0 and n=1 Fock states. We also use the ability to ground-state cool to accurately measure the motional heating rate and report a reduction by almost two orders of magnitude compared to our previously measured result, which we attribute to carefully eliminating sources of electrical noise in the system.
ISSN:2331-8422
DOI:10.48550/arxiv.1501.01562