公开(公告)号：US11522117B2

公开(公告)日：2022-12-06

申请号：US17151763

申请日：2021-01-19

Applicant: Massachusetts Institute of Technology

Inventor： Dirk Robert Englund ,  Matthew Edwin Trusheim ,  Matt Eichenfield ,  Tomas Neuman ,  Prineha Narang

IPC: G06N10/00 ,  H01L39/22 ,  G06N10/40 ,  H01L27/18 ,  H01L27/20

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.