Controlling the interaction of ultracold alkaline-earth atoms

Ultracold collision properties of metastable alkaline-earth atoms.

Ultracold collisions of spin-polarized 24Mg, 40Ca, and 88Sr in the metastable 3P2 excited state are investigated based on molecular potentials obtained from ab initio calculations. We calculate the long-range interaction potentials and estimate the scattering length and the collisional loss rate as a function of magnetic field. The scattering lengths show resonance behavior due to the appearanc...

Two-orbital SU(N) magnetism with ultracold alkaline-earth atoms

Fermionic alkaline-earth atoms have unique properties that make them attractive candidates for the realization of atomic clocks and degenerate quantum gases. At the same time, they are attracting considerable theoretical attention in the context of quantum information processing. Here we demonstrate that when such atoms are loaded in optical lattices, they can be used as quantum simulators of u...

Quantum computing with alkaline-Earth-metal atoms.

We present a complete scheme for quantum information processing using the unique features of alkaline-earth-metal atoms. We show how two completely independent lattices can be formed for the 1S0 and 3P0 states, with one used as a storage lattice for qubits encoded on the nuclear spin, and the other as a transport lattice to move qubits and perform gate operations. We discuss how the 3P2 level c...

Cross Sections for the Collisions of Alkaline Earth Atoms

The total attenuation cross sections, a*, were measured for collisions of an excited atomic beam of Mg, Ca or Sr with a target of Cl2 molecules. The experimental o* values equal: 85 Ä2, 100 Ä2 and 180 Ä2 for Mg*, Ca* and Sr*, respectively. Moreover, the reactive cross sections, OR were calculated, assuming the "harpoon mechanism" for the reactions in question. The obtained values are: OR* (Mg* ...

Title Laser-Induced Kondo Effect in Ultracold Alkaline-Earth Fermions