Spin-Valley Qubit Dynamics in Exchange-Coupled Silicon Quantum Dots

@article{Buterakos2021SpinValleyQD,
  title={Spin-Valley Qubit Dynamics in Exchange-Coupled Silicon Quantum Dots},
  author={Donovan Buterakos and Sankar Das Sarma},
  journal={PRX Quantum},
  year={2021}
}
The presence of valley states is a significant obstacle to realizing quantum information technologies in Silicon quantum dots, as leakage into alternate valley states can introduce errors into the computation. We use a perturbative analytical approach to study the dynamics of exchange-coupled quantum dots with valley degrees of freedom. We show that if the valley splitting is large and electrons are not properly initialized to valley eigenstates, then time evolution of the system will lead to… 

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