Experimental evaluation of digitally verifiable photonic computing for blockchain and cryptocurrency

Sunil Pai, Taewon Park, Marshall Ball, Bogdan Penkovsky, Michael Dubrovsky, Nathnael Abebe, Maziyar Milanizadeh, Francesco Morichetti, Andrea Melloni, Shanhui Fan, Olav Solgaard, David A.B. Miller

Research output: Contribution to journalArticlepeer-review


As blockchain technology and cryptocurrency become increasingly mainstream, photonic computing has emerged as an efficient hardware platform that reduces ever-increasing energy costs required to verify transactions in decentralized cryptonetworks. To reduce sensitivity of these verifications to photonic hardware error, we propose and experimentally demonstrate a cryptographic scheme, LightHash, that implements robust, low-bit precision matrix multiplication in programmable silicon photonic networks. We demonstrate an error mitigation scheme to reduce error by averaging computation across circuits, and simulate energy-efficiency-error trade-offs for large circuit sizes. We conclude that our error-resistant and efficient hardware solution can potentially generate a new market for decentralized photonic blockchain.

Original languageEnglish (US)
Pages (from-to)552-560
Number of pages9
Issue number5
StatePublished - May 20 2023

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics


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