Phononic bus for coherent interfaces between a superconducting quantum processor, spin memory, and photonic quantum networks
US11522117B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jan 19, 2021 |
| Grant date | Dec 6, 2022 |
| Priority date | — |
| Expiry date | Apr 14, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH10N69/00
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A hybrid quantum system performs high-fidelity quantum state transduction between a superconducting (SC) microwave qubit and the ground state spin system of a solid-state artificial atom. This transduction is mediated via an acoustic bus connected by piezoelectric transducers to the SC microwave qubit. For SC circuit qubits and diamond silicon vacancy centers in an optimized phononic cavity, the system can achieve quantum state transduction with fidelity exceeding 99% at a MHz-scale bandwidth. By combining the complementary strengths of SC circuit quantum computing and artificial atoms, the hybrid quantum system provides high-fidelity qubit gates with long-lived quantum memory, high-fidelity measurement, large qubit number, reconfigurable qubit connectivity, and high-fidelity state and gate teleportation through optical quantum networks.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.