Coherent control of Yb-171(+) ion qubit states and thermometry using motional decoherence

Yb-171(+) ions were trapped in a quadrupole ion trap. A mode-locked pulse laser at 355 nm was used to generate a frequency comb to drive a Raman transition between the ground hyperfine qubit states of the Doppler cooled ion. Qubit transitions were driven in co-propagating and counter propagating las...

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Veröffentlicht in:Journal of the Korean Physical Society 2021-02, Vol.78 (4), p.251-258
Hauptverfasser: Jeon, Honggi, Park, Nojun, Yu, Jiyong, Kwon, Yeong-Dae, Yum, Dahyun, Jhe, Wonho
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Sprache:eng
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Zusammenfassung:Yb-171(+) ions were trapped in a quadrupole ion trap. A mode-locked pulse laser at 355 nm was used to generate a frequency comb to drive a Raman transition between the ground hyperfine qubit states of the Doppler cooled ion. Qubit transitions were driven in co-propagating and counter propagating laser beam geometries. In the co-propagating geometry, the coherence time and the fidelity of gate operations were obtained. By taking advantage of the phonon number sensitivity of the Rabi frequency in the counter-propagating geometry, we measured the center of mass temperature of the trapped ion near the Doppler limit which can be used for general thermometry in the ion trap experiment.
ISSN:0374-4884
1976-8524
DOI:10.1007/s40042-020-00050-6