Quantum Information Processing with Alkaline-Earth-Like Atoms

Ultracold alkaline-earth-like atoms offer an attractive platform for quantum information processing. ~Nuclear spins are decoupled from electronic angular momentum in the closed shell 1S0 ground state, thereby providing a robust and isolated degree of freedom for a storing qubit. The 1S-$>$3P intercombinations lines provide the means to optically manipulate qubits in unique ways with very long coherence times. ~We present a variety of protocols that make use of these features. ~Due to the identical particle statistics, nuclear-spin exchange can be used to implement a sqrt-swap entangling quantum logic gate via cold s-wave collisions, even when there is no hyperfine or spin-spin dipolar interactions. ~The ability to independently manipulate nuclear and electronic degrees of freedom can allow us to cool atomic motion without decohering nuclear spin qubits via laser cooling or sympathetic cooling in a BEC reservoir. ~Finally, optical Feshbach resonances on the intercombination line allow for control of~atom coupling strengths at the heart of many protocols in QIP.