Coherent Spin Preparation of Indium Donor Qubits in Single ZnO Nanowires.
basic_science · Level V
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- Record sourced from PubMed, PMID 35108020.
- Also identified by DOI 10.1021/acs.nanolett.1c04156.
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Abstract
Shallow donors in ZnO are promising candidates for photon-mediated quantum technologies. Utilizing the indium donor, we show that favorable donor-bound exciton optical and electron spin properties are retained in isolated ZnO nanowires. The inhomogeneous optical line width of single nanowires (60 GHz) is within a factor of 2 of bulk single-crystalline ZnO. Spin initialization via optical pumping is demonstrated and coherent population trapping is observed. The two-photon absorption width approaches the theoretical limit expected due to the hyperfine interaction between the indium nuclear spin and the donor-bound electron.