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BEGIN:VEVENT
DTSTAMP:20260730T152728Z
LOCATION:Mtg Room 203AB
DTSTART;TZID=America/Los_Angeles:20260728T143400
DTEND;TZID=America/Los_Angeles:20260728T144700
UID:dac_DAC 2026_sess134_RESEARCH727@linklings.com
SUMMARY:A Correlation-Aware GKP Decoder for Fault-Tolerant Continuous-Vari
 able Photonic Quantum Computers
DESCRIPTION:Ryosuke Matsuo and Junichiro Kadomoto (The University of Tokyo
 )\n\nThe Gottesman–Kitaev–Preskill (GKP) encoding is a promising approach 
 for realizing fault-tolerant continuous-variable (CV) photonic quantum com
 puters. \nRecent studies have investigated various GKP decoding algorithms
 , among which correlation-aware methods that exploit inter-qubit correlati
 ons achieve significantly improved error-correction performance. \nHowever
 , hardware implementation of GKP decoding remains largely unexplored. \nEr
 ror decoding in CV photonic quantum computers must operate within tens of 
 nanoseconds to match the optical clock frequency.\nA straightforward hardw
 are implementation of correlation-aware decoding introduces substantial co
 mputational latency due to its arithmetic complexity. \nTo address this ch
 allenge, this paper proposes a high-accuracy and low-latency accelerator a
 rchitecture optimized for correlation-aware GKP decoding. \nLogic synthesi
 s using 7-nm FinFET technology demonstrates that our decoder can complete 
 correlation-aware GKP decoding with in 12.96 ns.\nIn addition, comprehensi
 ve design space exploration is conducted to evaluate tradeoffs among decod
 ing accuracy, latency, and circuit area, leading to design guidelines for 
 future correlation-aware GKP decoder implementations.\n\nTopics: Design, Q
 uantum\n\nTrack: DES6. Quantum Computing\n\nSession Chairs: Yannick Stade 
 (Technical University of Munich) and Shigeru Yamashita (Ritsumeikan Univer
 sity)\n\n
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