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Trapped Ion Quantum Computing

Polarization gradient cooling of single atoms in optical dipole traps

arXiv
Authors: Yue-Sum Chin, Matthias Steiner, Christian Kurtsiefer

Year

2017

Paper ID

44538

Status

Preprint

Abstract Read

~2 min

Abstract Words

97

Citations

N/A

Abstract

We experimentally investigate σ^+-σ^- polarization gradient cooling (PGC) of a single 87Rb atom in a tightly focused dipole trap and show that the cooling limit strongly depends on the polarization of the trapping field. For optimized cooling light power, the temperature of the atom reaches 10.4(6) μK in a linearly polarized trap, approximately five times lower than in a circularly polarized trap. The inhibition of PGC is qualitatively explained by the fictitious magnetic fields induced by the trapping field. We further demonstrate that switching the trap polarization from linear to circular after PGC induces only minor heating.

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  • We experimentally investigate σ^+-σ^- polarization gradient cooling (PGC) of a single ^87Rb atom in a tightly focused dipole trap and show that the cooling limit strongly...

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References & Citation Signals

[1] DOI https://doi.org/arXiv:1707.05965 [2] arXiv https://arxiv.org/abs/1707.05965 [3] Publisher https://arxiv.org/abs/1707.05965

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