Will quantum computers scale without inter-chip comms? A structured design exploration to the monolithic vs distributed architectures quest
Document typeConference report
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Rights accessOpen Access
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Being a very promising technology, with impressive advances in the recent years, it is still unclear how quantum computing will scale to satisfy the requirements of its most powerful applications. Although continued progress in the fabrication and control of qubits is required, quantum computing scalability will depend as well on a comprehensive architectural design considering a distributed multi-core approach as an alternative to the traditional monolithic version, hence including a communications perspective. However, this goes beyond introducing mere interconnects. Rather, it implies consolidating the full communications stack in the quantum computer structure. In this paper, we propose a double full-stack architecture encompassing quantum computation and quantum communications, which we use to address the monolithic versus distributed question with a structured design methodology. For that, we revisit the different quantum computing layers to capture and model their essence by highlighting the open design variables and performance metrics. Using behavioral models and actual measurements from existing quantum computers, the results of simulations suggest that multicore architectures may effectively unleash the full quantum computer potential.
CitationRodrigo, S. [et al.]. Will quantum computers scale without inter-chip comms? A structured design exploration to the monolithic vs distributed architectures quest. A: Conference on Design of Circuits and Integrated Systems. "2020 XXXV Conference on Design of Circuits and Integrated Systems (DCIS): Segovia, Spain: november 18-20, 2020: proceedings". Institute of Electrical and Electronics Engineers (IEEE), 2020, p. 1-6. ISBN 978-1-7281-9132-4. DOI 10.1109/DCIS51330.2020.9268630.
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