Rapid single-shot parity spin readout in a silicon double quantum dot with fidelity exceeding 99%
Aug 31, 2023
14 pages
Published in:
- npj Quantum Inf. 10 (2024) 1, 22
- Published: Feb 13, 2024
e-Print:
- 2309.00225 [cond-mat.mes-hall]
View in:
Citations per year
Abstract: (Springer)
Silicon-based spin qubits offer a potential pathway toward realizing a scalable quantum computer owing to their compatibility with semiconductor manufacturing technologies. Recent experiments in this system have demonstrated crucial technologies, including high-fidelity quantum gates and multiqubit operation. However, the realization of a fault-tolerant quantum computer requires a high-fidelity spin measurement faster than decoherence. To address this challenge, we characterize and optimize the initialization and measurement procedures using the parity-mode Pauli spin blockade technique. Here, we demonstrate a rapid (with a duration of a few μs) and accurate (with >99% fidelity) parity spin measurement in a silicon double quantum dot. These results represent a significant step forward toward implementing measurement-based quantum error correction in silicon.- spin: parity
- semiconductor: fabrication
- qubit: spin
- gate
- silicon
- quantum dot
- quantum error correction
- readout
- Pauli
- decoherence
References(32)
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