Single-Shot Readout of a Nuclear Spin in Silicon Carbide

• URL: http://arxiv.org/abs/2401.04470v1
• Date: Tue, 9 Jan 2024 10:15:23 GMT
• Title: Single-Shot Readout of a Nuclear Spin in Silicon Carbide
• Authors: Xiao-Yi Lai, Ren-Zhou Fang, Tao Li, Ren-Zhu Su, Jia Huang, Hao Li, Li-Xing You, Xiao-Hui Bao, Jian-Wei Pan
• Abstract summary: We report the first realization of single-shot readout for a nuclear spin in silicon carbide. With a dual-step readout scheme, we obtain a readout fidelity as high as 99.5% with a success efficiency of 89.8%. Our work complements the experimental toolbox of harnessing both electron and nuclear spins in SiC for future quantum networks.
• Score: 6.676809051180745
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Solid-state qubits with a photonic interface is very promising for quantum networks. Color centers in silicon carbide have shown excellent optical and spin coherence, even when integrated with membranes and nano-structures. Additionally, nuclear spins coupled with electron spins can serve as long-lived quantum memories. Pioneering work in previous has realized the initialization of a single nuclear spin and demonstrated its entanglement with an electron spin. In this paper, we report the first realization of single-shot readout for a nuclear spin in SiC. We obtain a deterministic readout fidelity of 98.2% with a measurement duration of 1.13 ms. With a dual-step readout scheme, we obtain a readout fidelity as high as 99.5% with a success efficiency of 89.8%. Our work complements the experimental toolbox of harnessing both electron and nuclear spins in SiC for future quantum networks.

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