منابع مشابه
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...
متن کاملOptical clocks based on ultranarrow three-photon resonances in alkaline Earth atoms.
A sharp resonance line that appears in three-photon transitions between the 1S0 and 3P0 states of alkaline earth and Yb atoms is proposed as an optical frequency standard. This proposal permits the use of the even isotopes, in which the clock transition is narrower than in proposed clocks using the odd isotopes and the energy interval is not affected by external magnetic fields or the polarizat...
متن کاملSingle-stage sub-Doppler cooling of alkaline earth atoms.
We report the first experimental study of sub-Doppler cooling in alkaline earth atoms (87Sr) enabled by the presence of nuclear spin-originated magnetic degeneracy in the atomic ground state. Sub-Doppler cooling in a sigma(+)-sigma(-) configuration is achieved despite the presence of multiple, closely spaced excited states. This surprising result is confirmed by an expanded multilevel theory of...
متن کاملUltracold 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...
متن کاملCross 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* ...
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ژورنال
عنوان ژورنال: Physical Review X
سال: 2018
ISSN: 2160-3308
DOI: 10.1103/physrevx.8.041055