Decoherence in electron-spin qubits

Spin qubits in semiconductor quantum dots are susceptible to both electric and magnetic field noise. A long-running thread of research in our group seeks to understand these decoherence mechanisms, where they comes from, and how to eliminate them.

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Low-frequency charge noise in Si/SiGe quantum dots

Charge-noise spectroscopy of Si/SiGe quantum dots via dynamically-decoupled exchange oscillations

Stabilizing an individual charge fluctuator in a Si/SiGe quantum dot

Characterization of individual charge fluctuators in Si/SiGe quantum dots