Single-shot latched readout of a quantum dot qubit using barrier gate pulsing

• DOI: 10.48550/arxiv.2408.15380
• Publication Date: 2024-08-27
• Authors: Sanghyeok Park; J D Benson; J. Corrigan; J. P. Dodson; S. N. Coppersmith; Mark Friesen; M. A. Eriksson
• Keywords: Single shot

Latching techniques are widely used to enhance readout of qubits. These methods require precise tuning multiple tunnel rates, which can be challenging achieve under realistic experimental conditions, such as when a qubit is coupled single reservoir. Here, we present method for single-shot measurement quantum dot with reservoir using latched-readout scheme. Our approach involves pulsing barrier gate dynamically control qubit-to-reservoir that readily applicable the latched various spin-based We use this enable state latching and reduce reset time in measurements coherent Larmor oscillations Si/SiGe hybrid qubit.