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Title: Phononic bus for coherent interfaces between a superconducting quantum processor, spin memory, and photonic quantum networks

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.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States); Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Harvard Univ., Cambridge, MA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1986880
Patent Number(s):
11522117
Application Number:
17/151,763
Assignee:
Massachusetts Institute of Technology (Cambridge, MA); President and Fellows of Harvard College (Cambridge, MA); National Tech. & Eng. Solutions of Sandia, LLC (Albuquerque, NM)
DOE Contract Number:  
NA003525; AC05-00OR22725; FWP 19-022266; SC0019140
Resource Type:
Patent
Resource Relation:
Patent File Date: 01/19/2021
Country of Publication:
United States
Language:
English

Citation Formats

Englund, Dirk Robert, Trusheim, Matthew Edwin, Eichenfield, Matt, Neuman, Tomas, and Narang, Prineha. Phononic bus for coherent interfaces between a superconducting quantum processor, spin memory, and photonic quantum networks. United States: N. p., 2022. Web.
Englund, Dirk Robert, Trusheim, Matthew Edwin, Eichenfield, Matt, Neuman, Tomas, & Narang, Prineha. Phononic bus for coherent interfaces between a superconducting quantum processor, spin memory, and photonic quantum networks. United States.
Englund, Dirk Robert, Trusheim, Matthew Edwin, Eichenfield, Matt, Neuman, Tomas, and Narang, Prineha. Tue . "Phononic bus for coherent interfaces between a superconducting quantum processor, spin memory, and photonic quantum networks". United States. https://www.osti.gov/servlets/purl/1986880.
@article{osti_1986880,
title = {Phononic bus for coherent interfaces between a superconducting quantum processor, spin memory, and photonic quantum networks},
author = {Englund, Dirk Robert and Trusheim, Matthew Edwin and Eichenfield, Matt and Neuman, Tomas and Narang, Prineha},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2022},
month = {12}
}

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