Perspective on rare earth crystals
نویسندگان
چکیده
منابع مشابه
Rare earth doped crystals for quantum information manipulation
Quantum information manipulation applied to computing is a promising way to dramatically improve some complex calculations and quantum systems simulation. To date, the physical systems able to perform quantum calculations are still very rare and limited to a few quantum bits, so called qubits. It has been proposed that rare earth ions in single crystals at liquid helium temperature could provid...
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The optical absorptivities of oriented single crystals of hcp Gd, Tb, Dy, Ho, Er, Tm, and Lu were measured at 4.2 K between 0.2 and 4.4 eV. Polarized radiation was used to reveal the optical anisotropy. Systematic movement of structures in the absorptivity and optical conductivity was observed as a result of trends within sp and d bands. Low-energy structures were related to effects of s−f exch...
متن کاملInfluence of other rare earth ions on the optical refrigeration efficiency in Yb:YLF crystals.
We investigated the effect of rare earth impurities on the cooling efficiency of Yb³⁺:LiYF₄ (Yb:YLF). The refrigeration performance of two single crystals, doped with 5%-at. Yb and with identical history but with different amount of contaminations, have been compared by measuring the cooling efficiency curves. Spectroscopic and elemental analyses of the samples have been carried out to identify...
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Quantum light-matter interfaces connecting stationary qubits to photons will enable optical networks for quantum communications, precise global time keeping, photon switching and studies of fundamental physics. Rare-earth-ion-doped crystals are state-of-the-art materials for optical quantum memories and quantum transducers between optical photons, microwave photons and spin waves. Here we demon...
متن کاملRare Earth Elements Profile
Definitions and characteristics The rare earth elements (REE) (sometimes referred to as the rare earth metals) are a group of 17 chemically similar metallic elements, including the 15 lanthanides, scandium and yttrium. The lanthanides are elements spanning atomic numbers 57 (lanthanum, La) to 71 (lutetium, Lu) (Table 1). The lanthanides all occur in nature, although promethium, the rarest, only...
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ژورنال
عنوان ژورنال: Science China Technological Sciences
سال: 2020
ISSN: 1674-7321,1869-1900
DOI: 10.1007/s11431-019-1520-0