A spin-triplet encoding based on valley-singlet states makes shuttling fidelities in Si/SiGe quantum wells higher and more robust to small valley splittings by suppressing Landau-Zener excitations.
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Theoretical expressions for singlet return probability in multivalley Si double quantum dots near spin-valley resonances are derived, accounting for valley occupations, and validated against experiments to map valley splittings and probe g-factor dependence.
Theoretical study of flopping-mode qubits in Si/SiGe showing that high-fidelity operation is achievable across valley configurations when pulses are tuned for weak noise or when valley splittings are large and phase differences small for strong noise.
A review summarizing spin qubit platforms, long-range coupling methods, and a proposal for topological linking toward scalable quantum information processing.
citing papers explorer
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Using a spin-triplet encoding to enhance shuttling fidelities in Si/SiGe quantum wells
A spin-triplet encoding based on valley-singlet states makes shuttling fidelities in Si/SiGe quantum wells higher and more robust to small valley splittings by suppressing Landau-Zener excitations.
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Singlet-triplet oscillations in multivalley Si double quantum dots
Theoretical expressions for singlet return probability in multivalley Si double quantum dots near spin-valley resonances are derived, accounting for valley occupations, and validated against experiments to map valley splittings and probe g-factor dependence.
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The effects of alloy disorder on strongly-driven flopping mode qubits in Si/SiGe
Theoretical study of flopping-mode qubits in Si/SiGe showing that high-fidelity operation is achievable across valley configurations when pulses are tuned for weak noise or when valley splittings are large and phase differences small for strong noise.