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Spin Lifetime Measurements in Si/SiGe Quantum Dots

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Silicon is a promising material for building solid-state spin qubits due to its low spin-orbit coupling and a high abundance of spin-zero nuclei in the crystal. In this talk I will discuss measurements of the two-electron singlet and triplet spin states in a Si/SiGe double quantum dot. These states form the basis for a logical qubit that combines fast manipulation and a spin readout mechanism. Readout of the states employs Pauli spin blockade to perform spin-to-charge conversion, combined with single-shot detection of the charge state using a nearby quantum-point-contact.

J. Prance et al., Phys. Rev. Lett. 108, 046808 (2012).

This talk is part of the Semiconductor Physics Group Seminars series.

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