FPGA-based Deterministic and Low-Latency Control for Distributed Quantum Computing

Romerson D Oliveira, Sima Bahrani, Ekin Arabul, Rui Wang, Reza Nejabati, Dimitra Simeonidou

Research output: Chapter in Book/Report/Conference proceedingConference Contribution (Conference Proceeding)

2 Citations (Scopus)

Abstract

Distributed quantum computing is a promising solution for creating large-scale quantum computers. In such scenarios, quantum processing units (QPUs) are connected to each other via quantum and classical links. To increase the performance in such a distributed manner, and due to the fragile nature of quantum bits and their decoherence with time, the impact of classical links such as communication latency and jitter between QPUs shall be considered. Here, we propose a lowlatency and time-deterministic FPGA-based network supporting execution of distributed quantum circuits. We focus on transmissions of measurement result and control messages as well as synchronization in a distributed network. We demonstrate that a message is transmitted with 361.60 ns between QPUs using optical Ethernet. Synchronization reaches 9.6 ns precision using only Ethernet frames and can reach 21 ps with an external clock. Further, a use-case example of an Inverse Quantum Fourier Transform is implemented to evaluate the impact in terms of latency for inter-QPU data transfers. Our theoretical error analysis and simulation results show that the latency added by our FPGA-controlled network has a negligible impact on the quantum algorithm performance for practical values of memory decoherence time.
Original languageEnglish
Title of host publicationIEEE INFOCOM 2023 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS)
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Number of pages6
ISBN (Electronic)978-1-6654-9427-4
ISBN (Print)978-1-6654-9428-1
DOIs
Publication statusPublished - 29 Aug 2023
EventIEEE INFOCOM Network Science for Quantum Communication Networks Workshop: NetSciQCom 2023 - New York area, USA, New York, United States
Duration: 17 May 202320 May 2023
https://infocom2023.ieee-infocom.org/workshop-network-science-quantum-communication-networks-netsciqcom

Publication series

NameIEEE Conference on Computer Communications Workshops, INFOCOM Wksps
PublisherIEEE
ISSN (Print)2159-4228
ISSN (Electronic)2833-0587

Conference

ConferenceIEEE INFOCOM Network Science for Quantum Communication Networks Workshop
Abbreviated titleNetSciQCom
Country/TerritoryUnited States
CityNew York
Period17/05/2320/05/23
Internet address

Bibliographical note

We acknowledge the funding support from the Quantum Communication
Hub by the EPSRC grant ref. EP/T001011/1 and the Quantum Data Centre
of Future UKRI project (10004793). These authors have contributed equally
to this work: Romerson D. Oliveira, Sima Bahrani.

Keywords

  • Distributed quantum computing
  • Quantum algorithm
  • FPGA
  • Low latency network
  • FPGA control

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