2017/11/02 by Nils Scharnhorst, Scharnhorst, Nils, Javier Cerrillo +11
Physics and Astronomy · #Semiconductor Quantum Structures and Devices #Quantum optics and atomic interactions #Cold Atom Physics and Bose-Einstein Condensates
paper · pdf · doi:10.48550/arxiv.1711.00738
We developed a multi-mode ground state cooling technique based on electromagnetically-induced transparency (EIT). By involving an additional ground and excited state, two individually adjustable bright states together with a dark state are created. While the dark state suppresses carrier scattering, the two bright states are brought into resonance with spectrally separated motional red sidebands. With this double-bright EIT (D-EIT) cooling scheme, we experimentally demonstrate ground state cooling of all three motional modes of a trapped 40Ca+ with a single cooling pulse. The approach is scalable to more than two bright states by introducing laser couplings to additional states.