NTT and OptQC target 1-million-qubit optical quantum computer by 2030

[KaiHeck]

Tokyo based startup OptQC and telecom giant NTT have signed a genuinely significant capital and business alliance aimed at commercializing a fault tolerant, one million qubit class optical quantum computer, and this one stands out because its betting on light rather than superconducting circuits or trapped ions as the actual path to useful scale

NTT is making a strategic equity investment in OptQC to build out a medium to long term collaboration spanning hardware architecture design, supply chain development and real world enterprise implementation, this expands on an initial research partnership the two companies signed back in November 2025, and theyve now launched a formal joint research project running through fiscal year 2027 specifically to nail down the architectural design and core component technologies a system at this scale would actually need

OptQC was spun out of the University of Tokyos Furusawa Laboratory in 2024, drawing on roughly 25 years of prior optical quantum research from that lab, the company already operates its first optical quantum processing unit, called MoQuren, at the National Institute of Advanced Industrial Science and Technologys G-QuAT facility, where it serves as a key module in Japans ABCI-Q quantum classical hybrid infrastructure, notably the joint research team also announced theyve developed what they describe as the worlds highest quality quantum light source, a technology they say is essential for improving photonic quantum computer performance going forward

The genuinely distinctive technical pitch here is room temperature operation, by leveraging optical entanglement, time domain multiplexing and NTTs optical amplification and waveguided light source expertise, the alliance is specifically trying to sidestep the cryogenic cooling requirements and physical scaling barriers that solid state qubit approaches like superconducting circuits are stuck dealing with, NTT is also contributing quantum error correction research developed under its broader IOWN optical networking initiative to the OptQC platform

The roadmap is genuinely staged and concrete rather than just an aspirational target, co-creation work with user companies begins in fiscal 2026, a proof of concept 10,000 qubit class system is planned for fiscal 2028, and the full fault tolerant one million qubit class commercial system is targeted for fiscal 2030, the companies say theyre aiming applications across finance, manufacturing, medicine development, materials science, energy optimization and AI once the technology matures enough for real world deployment

OptQC and NTT Strengthen Collaboration on Large-Scale Optical Quantum Computingthequantuminsider.com

[BigDog_Fan]

Room temperature operation without cryogenic cooling is genuinely the most interesting differentiator here, that alone could make deployment and maintenance dramatically simpler and cheaper than superconducting platforms if the underlying physics actually scales the way theyre claiming

[Blue Coder]

A staged roadmap with a real 10,000 qubit proof of concept in 2028 before the full million qubit target in 2030 is a much more credible way to present this than just announcing a distant headline number, gives genuine intermediate checkpoints to judge progress against

[RayOfLight89]

NTTs deep expertise in optical amplification and existing fiber optic infrastructure from decades of telecom work is an underrated advantage here, theyre not starting from scratch on the optical engineering side the way a pure quantum startup would have to

[NicholasCleverley]

The 2030 fault tolerant million qubit target is still four years out and roadmaps like this rarely survive contact with reality on schedule, but even landing somewhere meaningfully short of that goal by 2030 would still represent real progress for photonic quantum computing broadly

[HollywoodHogan02]

Betting on photonics specifically to avoid the scaling barriers that superconducting qubits face is a different strategic bet than most of the major players, curious how this compares directly to PsiQuantums similar photonic approach using conventional semiconductor fabs

[Inland Sienna]

The worlds highest quality quantum light source claim buried in this announcement deserves more attention on its own, quantum light source quality is one of those unglamorous foundational metrics that quietly determines how well everything built on top of it actually performs

[Rachel]

Would love to see this benchmarked directly against IBM, Google and PsiQuantums recent milestones once the 10,000 qubit proof of concept actually ships in 2028, comparing across fundamentally different hardware philosophies is the only way to get a clear picture of where the field genuinely stands

[Reuben82]

Time domain multiplexing to scale qubit counts without proportionally multiplying physical hardware is a clever architectural approach if it actually works at scale, thats exactly the kind of engineering trick that could make photonic quantum computing genuinely more practical than brute force qubit counting

[Postie]

NTT contributing IOWN derived quantum error correction research to the platform shows how this alliance is genuinely pooling complementary expertise rather than just NTT writing a check, real technical integration across two different companies specialties

[Wendy88]

25 years of prior optical quantum research from the Furusawa Lab at University of Tokyo gives this genuine academic depth behind the commercial spinout, this isnt a hype driven startup chasing a trend, its built on a long established research foundation