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The Ellenbogen's "Matter as Software" Concept for Quantum Computer Implementation: III. Selection of X@C60 Molecular Building Blocks (MBBs) for Tip-Based Nanofabrication (TBN) of Trapped Neutral Atom Quantum Computing Devices

The selection of guest atoms X of X@C60 MBBs for TBN of trapped neutral atom quantum computing devices is reported. Assuming the all-optical quantum computing as a final target stage, the two criteria are most important: the charge q accumulated on the C60 host must be as low as possible, and the atom X must have one or more available excited states within the band falling into the low energy window of neutral C60 molecule electronic spectrum. The search for the optimal guest atoms X has been performed for the elements from H to Bi, excluding Tc and lanthanides. Fourteen X elements passed the aforementioned criteria, showing that the X@C60 host-guest molecules are almost ideal MBBs for the implementation of “Matter as Software” concept for prototyping the trapped neutral atom quantum computing devices.

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