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arXiv · 1812.09875

Cold Damping of an Optically Levitated Nanoparticle to micro-Kelvin Temperatures

Felix Tebbenjohanns·Martin Frimmer·Andrei Militaru·Vijay Jain·Lukas Novotny
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Abstract

We implement a cold damping scheme to cool one mode of the center-of-mass motion of an optically levitated nanoparticle in ultrahigh vacuum from room temperature to a record-low temperature of 100 micro-Kelvin. The measured temperature dependence on feedback gain and thermal decoherence rate is in excellent agreement with a parameter-free model. We determine the imprecision-backaction product for our system and provide a roadmap towards ground-state cooling of optically levitated nanoparticles.

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Felix Tebbenjohanns, Martin Frimmer, Andrei Militaru, Vijay Jain, Lukas Novotny. 2018-12-24. Cold Damping of an Optically Levitated Nanoparticle to micro-Kelvin Temperatures. https://doi.org/10.1103/physrevlett.122.223601

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