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  • Title: Integrated silicon qubit platform with single-spin addressability, exchange control and single-shot singlet-triplet readout.
    Author: Fogarty MA, Chan KW, Hensen B, Huang W, Tanttu T, Yang CH, Laucht A, Veldhorst M, Hudson FE, Itoh KM, Culcer D, Ladd TD, Morello A, Dzurak AS.
    Journal: Nat Commun; 2018 Oct 30; 9(1):4370. PubMed ID: 30375392.
    Abstract:
    Silicon quantum dot spin qubits provide a promising platform for large-scale quantum computation because of their compatibility with conventional CMOS manufacturing and the long coherence times accessible using 28Si enriched material. A scalable error-corrected quantum processor, however, will require control of many qubits in parallel, while performing error detection across the constituent qubits. Spin resonance techniques are a convenient path to parallel two-axis control, while Pauli spin blockade can be used to realize local parity measurements for error detection. Despite this, silicon qubit implementations have so far focused on either single-spin resonance control, or control and measurement via voltage-pulse detuning in the two-spin singlet-triplet basis, but not both simultaneously. Here, we demonstrate an integrated device platform incorporating a silicon metal-oxide-semiconductor double quantum dot that is capable of single-spin addressing and control via electron spin resonance, combined with high-fidelity spin readout in the singlet-triplet basis.
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