Donor- or acceptor-based spin qubits with isotopically purified materials
US10388848B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 19, 2018 |
| Grant date | Aug 20, 2019 |
| Priority date | — |
| Expiry date | Mar 19, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10D48/385
- WIPO fieldMicro-structural and nano-technology
- WIPO sectorChemistry
Abstract
Embodiments of the present disclosure describe use of isotopically purified materials in donor- or acceptor-based spin qubit devices and assemblies. An exemplary spin qubit device assembly may include a semiconductor host layer that includes an isotopically purified material, a dopant atom in the semiconductor host layer, and a gate proximate to the dopant atom. An isotopically purified material may include a lower atomic-percent of isotopes with nonzero nuclear spin than the natural abundance of those isotopies in the non-isotopically purified material. Reducing the presence of isotopes with nonzero nuclear spin in a semiconductor host layer may improve qubit coherence and thus performance of spin qubit devices and assemblies.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.