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dc.contributor.authorThien, N
dc.contributor.authorHill, CD
dc.contributor.authorHollenberg, LCL
dc.contributor.authorJames, MR
dc.date.accessioned2020-12-21T03:32:06Z
dc.date.available2020-12-21T03:32:06Z
dc.date.issued2017-10-17
dc.identifierpii: 10.1038/s41598-017-13308-0
dc.identifier.citationThien, N., Hill, C. D., Hollenberg, L. C. L. & James, M. R. (2017). Fan-out Estimation in Spin-based Quantum Computer Scale-up. SCIENTIFIC REPORTS, 7 (1), https://doi.org/10.1038/s41598-017-13308-0.
dc.identifier.issn2045-2322
dc.identifier.urihttp://hdl.handle.net/11343/257246
dc.description.abstractSolid-state spin-based qubits offer good prospects for scaling based on their long coherence times and nexus to large-scale electronic scale-up technologies. However, high-threshold quantum error correction requires a two-dimensional qubit array operating in parallel, posing significant challenges in fabrication and control. While architectures incorporating distributed quantum control meet this challenge head-on, most designs rely on individual control and readout of all qubits with high gate densities. We analysed the fan-out routing overhead of a dedicated control line architecture, basing the analysis on a generalised solid-state spin qubit platform parameterised to encompass Coulomb confined (e.g. donor based spin qubits) or electrostatically confined (e.g. quantum dot based spin qubits) implementations. The spatial scalability under this model is estimated using standard electronic routing methods and present-day fabrication constraints. Based on reasonable assumptions for qubit control and readout we estimate 102-105 physical qubits, depending on the quantum interconnect implementation, can be integrated and fanned-out independently. Assuming relatively long control-free interconnects the scalability can be extended. Ultimately, the universal quantum computation may necessitate a much higher number of integrated qubits, indicating that higher dimensional electronics fabrication and/or multiplexed distributed control and readout schemes may be the preferredstrategy for large-scale implementation.
dc.languageEnglish
dc.publisherNATURE PUBLISHING GROUP
dc.titleFan-out Estimation in Spin-based Quantum Computer Scale-up
dc.typeJournal Article
dc.identifier.doi10.1038/s41598-017-13308-0
melbourne.affiliation.departmentSchool of Physics
melbourne.source.titleScientific Reports
melbourne.source.volume7
melbourne.source.issue1
dc.rights.licenseCC BY
melbourne.elementsid1269469
melbourne.contributor.authorHollenberg, Lloyd
melbourne.contributor.authorHill, Charles
dc.identifier.eissn2045-2322
melbourne.accessrightsOpen Access


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