Coherence of a dynamically decoupled single neutral atom

Chow, Chang Hoong; Ng, Boon Long; Kurtsiefer, Christian

doi:10.1109/cleo/europe-eqec52157.2021.9542451

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2022

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“…Once an atom is trapped, we apply 10 ms of PGC to reduce the atomic motion to a temperature of 14.7(2) µK [28]. Then, a bias magnetic field of 1.44 mT is applied along the FORT laser propagation direction to remove the degeneracy of the Zeeman states, and the atom is optically pumped into |g [29]. Next, we turn on the probe laser beam along the optical axis for 2 µs.…”

Section: Methodsmentioning

confidence: 99%

Observation of the Mollow Triplet from an optically confined single atom

Ng¹,

Chow²,

Kurtsiefer³

2022

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Resonance fluorescence from atomic systems consists of a single spectral peak that evolves into a Mollow triplet for a strong excitation field. Photons from different peaks of the triplet show distinct photon correlation that make the fluorescence a useful light source for quantum information purpose. We characterize the fluorescence of a single optically trapped 87 Rb atom that is excited resonantly at different power levels. Second-order correlation measurements reveal the single photon nature of the fluorescence concurrently with Rabi oscillations of a strongly excited atom. The asymmetry in correlations between photons from two sidebands of the fluorescence spectrum when the atom is exposed to an off-resonant field further indicates that there is a preferred time-ordering of the emitted photons from different sidebands.

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Section: Methodsmentioning

confidence: 99%