AI is pushing computing infrastructure to its limits. Our photonics can help. Today, PsiQuantum is unveiling its industry-leading Optical Circuit Switch initiative with an 8×8 OCS demo built on the company’s low-loss silicon photonics platform—the same platform we’ve spent nearly a decade developing for quantum computing.

PsiQuantum was founded on a simple premise: useful quantum computing requires a million-qubit, fault-tolerant system. We chose photonics for its scaling advantages and spent nearly a decade building an ultra-low-loss silicon photonics platform to make that path possible. That platform is foundational to our path to useful quantum computers. Now, beginning with Optical Circuit Switching, it can help power the next generation of AI infrastructure.

Learn more: psiquantum.com/news-import/p…

Updates from the team behind Construct—PsiQuantum's open-access software suite for developing fault-tolerant quantum algorithms—are now on Substack. Subscribe for technical deep dives, tutorials, and perspectives at the cutting edge of quantum algorithm development: psiqconstruct.substack.com/

Advancing American Quantum Computing​ PsiQuantum has received a conditional commitment for a loan of up to $150 million from the U.S. Department of War’s Office of Strategic Capital, which would expand the company’s advanced manufacturing and prototyping capabilities in the United States. Learn more: psiquantum.com/news-import/p…

PsiQuantum has been designing and building high-power cryostats in a datacenter form-factor since 2020. Our design leverages the higher operating temperature of photonic qubits to pack hundreds of modules into a single cabinet, advancing beyond the traditional "chandelier." Our fourth generation cryogenic cabinets bring a more compact, modular design while maintaining the same 60W cooling capacity at 2 K.

Fusion energy, aerospace engineering, and climate modeling all rely on computationally intensive simulation. PsiQuantum’s latest research explores a new quantum algorithmic framework that could make these simulations significantly more efficient under the right conditions, opening new directions for scientific outcomes on fault-tolerant quantum computers. Learn more: bit.ly/4ytQXeX

What if quantum computers could simulate complex systems without tracking every detail? PsiQuantum’s latest research introduces Quantum Koopman Algorithms (QKA): a new framework that models how observable quantities evolve over time, opening new possibilities for studying nonlinear dynamics and open quantum systems. Learn more: psiquantum.com/research-soup…

PsiQuantum is heading to #IEEEQuantumWeek in Toronto. This upcoming week, our team will be hosting and participating in tutorials, technical talks, workshops, and panels covering fault-tolerant quantum algorithms, quantum software, error correction, resource estimation, and more: bit.ly/4AjF0K6

PsiQuantum has finalized a $100 million award from the U.S. Department of @CommerceGov to strengthen American leadership in quantum computing and semiconductor supply-chain security.​ With this funding, combined with our supply chain anchored in the United States, PsiQuantum will accelerate the R&D, manufacturability, and performance of our state-of-the-art critical components—right here in America. Learn more: psiquantum.com/news-import/p…

Preparing together for the quantum future.​ ​PsiQuantum and @BrookhavenLab are announcing a new collaboration that will leverage Construct—PsiQuantum's quantum algorithm development software—to support Brookhaven Lab scientists researching scientific applications for the first generation of fault-tolerant quantum computers. Learn more: bit.ly/4cnSVo9

Building a quantum computer out of light. MIT @techreview takes a behind-the-scenes look at PsiQuantum's approach to building utility-scale, fault-tolerant quantum computers, exploring our state-of-the-art photonics, prototype systems, and cryogenics that underpin our path to scale. Read the full feature: technologyreview.com/2026/07…

We are thrilled to announce Niklas Zennström, Fou​nder and CEO ​​​of @Atomico, has joined PsiQuantum's Board of Directors, bringing decades of experience building, scaling, and investing in category-defining technology companies. Niklas' appointment comes as PsiQuantum continues to strengthen its leadership team and Board and scale its operations globally: Learn more here: psiquantum.com/news-import/p…

Australia pioneered photonic quantum computing. Now it’s building it.