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- W4284693498 abstract "A pair of coupled dots with one electron in each dot can provide improvements in spin coherence, particularly at an electrical bias called the sweet spot, but few measurements have been performed on self-assembled dots in this regime. Here, we directly measure the T_{2}^{*} coherence time of the singlet-triplet states in this system as a function of bias and magnetic field, obtaining a maximum T_{2}^{*} of 60 ns, more than an order of magnitude higher than an electron spin in a single quantum dot. Our results uncover two main dephasing mechanisms: electrical noise away from the sweet spot, and a magnetic field dependent interaction with nuclear spins due to a difference in g factors." @default.
- W4284693498 created "2022-07-08" @default.
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- W4284693498 date "2022-07-07" @default.
- W4284693498 modified "2023-09-30" @default.
- W4284693498 title "Enhanced Spin Coherence of a Self-Assembled Quantum Dot Molecule at the Optimal Electrical Bias" @default.
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- W4284693498 doi "https://doi.org/10.1103/physrevlett.129.027403" @default.
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- W4284693498 hasPublicationYear "2022" @default.
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