, for quantum memory, utilizing density functional theory calculations. This discovery marks a significant advance in the search for materials capable of storing and transmitting quantum information, with rare earth elements like europium showing particular promise due to their unique atomic structures and long-lived electron excitation states. Credit: SciTechDaily.
“The problem that we are trying to tackle here is finding a material that can store that quantum information for a long time. One way to do this is to use ions of rare earth metals,” says Shoemaker.Found at the very bottom of the periodic table, rare earth elements, such as europium, have shown promise for use in quantum information devices due to their unique atomic structures. Specifically, rare earth ions have many electrons densely clustered close to the nucleus of the.
Shoemaker and Riedel imposed a few rules in their search of possible new materials. First, they wanted to use the ionic configuration Eu) because it operates at the right optical wavelength. To be “written” optically, the materials should be transparent. Second, they wanted a material made of other elements that have only one stable isotope.
“We have shown that there are a lot of unknown materials left to be made that are good candidates for quantum information storage,” Shoemaker says. “And we have shown that we can make them efficiently and predict which ones are going to be stable.” Reference: “Design Rules, Accurate Enthalpy Prediction, and Synthesis of Stoichiometric Eu3+ Quantum Memory Candidates” by Zachary W. Riedel and Daniel P. Shoemaker, 12 January 2024, Daniel Shoemaker is also an affiliate of the Materials Research Laboratory and the Illinois Quantum Information Science and Technology Center at UIUC.This research was supported by the U.S. Department of Energy, Office of Science, National Quantum Information Science Research Center Q-NEXT.
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