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 language | English |
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Title of host publication | IEEE INFOCOM 2023 - IEEE Conference on Computer Communications Workshops (INFOCOM WKSHPS) |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Number of pages | 6 |
ISBN (Electronic) | 978-1-6654-9427-4 |
ISBN (Print) | 978-1-6654-9428-1 |
DOIs | |
Publication status | Published - 29 Aug 2023 |
Event | IEEE INFOCOM Network Science for Quantum Communication Networks Workshop: NetSciQCom 2023 - New York area, USA, New York, United States Duration: 17 May 2023 → 20 May 2023 https://infocom2023.ieee-infocom.org/workshop-network-science-quantum-communication-networks-netsciqcom |
Publication series
Name | IEEE Conference on Computer Communications Workshops, INFOCOM Wksps |
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Publisher | IEEE |
ISSN (Print) | 2159-4228 |
ISSN (Electronic) | 2833-0587 |
Conference
Conference | IEEE INFOCOM Network Science for Quantum Communication Networks Workshop |
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Abbreviated title | NetSciQCom |
Country/Territory | United States |
City | New York |
Period | 17/05/23 → 20/05/23 |
Internet address |
Bibliographical note
We acknowledge the funding support from the Quantum CommunicationHub 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