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Charge Relaxation in a Single-Electron<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mi>Si</mml:mi><mml:mo>/</mml:mo><mml:mi>SiGe</mml:mi></mml:math>Double Quantum Dot
We measure the interdot charge relaxation time ${T}_{1}$ of a single electron trapped in an accumulation mode $\mathrm{Si}/\mathrm{SiGe}$ double quantum dot. The energy level structure of the charge qubit is determined using photon assisted tunneling, which reveals the presence of a low-lying excited state. We systematically measure ${T}_{1}$ as a …