Singlet-triplet minus mixing and relaxation lifetimes in a double donor dot

S. K. Gorman, M. A. Broome, M. G. House, S. J. Hile, J. G. Keizer, D. Keith, T. F. Watson, W. J. Baker, M. Y. Simmons

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Abstract

We measure singlet-triplet mixing in a precision fabricated double donor dot comprising 2 and 1 phosphorus atoms separated by 16 ± 1 nm. We identify singlet and triplet-minus states by performing a sequential independent spin readout of the two electron system and probe its dependence on magnetic field strength. The relaxation of singlet and triplet states is measured to be 12.4 ± 1.0 s and 22.1 ± 1.0 s, respectively, at Bz = 2.5 T.

Original languageEnglish
Article number243105
JournalApplied Physics Letters
Volume112
Issue number24
DOIs
Publication statusPublished - 2018

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