Experimental evaluation of digitally verifiable photonic computing for blockchain and cryptocurrency

Author:

Pai Sunil1ORCID,Park Taewon,Ball Marshall23,Penkovsky Bogdan3,Dubrovsky Michael3,Abebe Nathnael4ORCID,Milanizadeh Maziyar5ORCID,Morichetti Francesco5ORCID,Melloni Andrea5ORCID,Fan ShanhuiORCID,Solgaard OlavORCID,Miller David A. B.ORCID

Affiliation:

1. PsiQuantum

2. New York University

3. PoWx

4. Google

5. Politecnico di Milano

Abstract

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.

Funder

Air Force Office of Scientific Research

Publisher

Optica Publishing Group

Subject

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

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