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Electromagnetically induced transparency (EIT) can be used to cool an atom ina harmonic potential close to the ground state by addressing severalvibrational modes simultaneously. Previous experimental efforts focus ontrapped ions and neutral atoms in a standing wave trap. In this work, wedemonstrate EIT cooling of an optically trapped single neutral atom, where thetrap frequencies are an order of magnitude smaller than in an ion trap and astanding wave trap. We resolve the Fano resonance feature in fluorescenceexcitation spectra and the corresponding cooling profile in temperaturemeasurements. A final temperature of around 6 $\mu$K is achieved with EITcooling, a factor of two lower than the previous value obtained usingolarization gradient cooling.

Fano Resonance in Excitation Spectroscopy and Cooling of an Optically Trapped Single Atom