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

Journal Article (2018)
Author(s)

S. K. Gorman (University of New South Wales)

M. A. Broome (University of New South Wales)

M. G. House (University of New South Wales)

S. J. Hile (University of New South Wales)

J. Keizer (University of New South Wales, Centre of Excellence for Quantum Computation and Communication Technology)

D. Keith (University of New South Wales)

T.F. Watson (Centre of Excellence for Quantum Computation and Communication Technology, Kavli institute of nanoscience Delft, University of New South Wales, TU Delft - QCD/Vandersypen Lab)

W. J. Baker (University of New South Wales)

Michelle Y. Simmons (University of New South Wales)

Research Group
QCD/Vandersypen Lab
DOI related publication
https://doi.org/10.1063/1.5021500
More Info
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Publication Year
2018
Language
English
Research Group
QCD/Vandersypen Lab
Issue number
24
Volume number
112

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.

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