We've been drawing Ψ's with photons on chips for years. Using our Omega platform we've miniaturized (x50) and improved control (>x20).

We’re excited to introduce Construct, the first purpose-built software platform for fault-tolerant quantum computing.​​ ​​ Designing, developing, and optimizing fault-tolerant quantum algorithms. ​

Our architecture relies on large arrays of classical lasers to drive photon sources—too many for bulky, off-the-shelf solutions to scale affordably.​ ​ We’re reducing cost by integrating classical components on-chip, using the same photonics platform we built for quantum computing.

From the start, we’ve been singularly focused on building fault-tolerant quantum computers at the million-qubit scale. ​ This year we're breaking ground on the real thing, two utility-scale quantum computers in Brisbane and Chicago.

Our photonic qubits travel from different modules through standard optical fiber for fusion and must arrive synchronously. We can now passively control optical fiber, over the length of a mile, to a fraction of the width of a human hair—on spec for fusion-based quantum computing.

Big news for South Chicago: @psiquantum.bsky.social is investing $10K in Bowen High School’s STEM program — funding hands-on tools like VR, drones and robotics. It’s part of their commitment to supporting students near the IQMP. More via @blockclubchi.bsky.social:

Quantum computing offers a radically new approach to modeling catalytic reactions, going beyond classical approximations to capture the full complexity of chemical dynamics.

Before PsiQuantum, our co-founders Jeremy O’Brien and Pete Shadbolt put the very first quantum processor on the cloud.

As teams around the world begin to scale up quantum computing systems, the need to connect chips together increasingly appears as a bottleneck. Our UK team just demonstrated a time-encoded lab-to-lab qubit interconnect over 250m of standard telecom fiber with 99.6% ±0.2% fidelity.

The next generation of our cryogenic cabinet is engineered to cool over 100 quantum chips from our Omega platform to liquid helium temperature. We will soon be welcoming this module at our facility in the UK and another cabinet at our new test and manufacturing facility in Silicon Valley.

Encouraging to see the whole field of quantum computing now beginning to take seriously the datacenter-like scaling challenges which motivated our founders to choose photons 25 years ago. Hear more from Pete Shadbolt tomorrow at NVIDIA's Quantum Day #GTC25.

High-throughput testing is a critical and often overlooked part of the process of scaling from breakthrough devices in a research lab to a reliable, high-volume manufacturing process suitable for building million-qubit machines. ​

Photonic quantum computing has long dreamed of optical switches with well-beyond state-of-the-art performance. ​ We developed a 300mm manufacturing process for one of the strongest electro-optic materials known to science, barium titanate (BTO).

The latest paper from our Quantum Applications team and partners at Hartree Centre improves resource estimates for codebreaking of binary elliptic curve cryptography (ECC). Shor's algorithm helps our team benchmark resource estimates for commercial applications. www.psiquantum.com/featured-new...

The performance of the photonic components in our Omega chipset, recently reported in Nature, is already beyond-state-of-the-art. However, the data in the paper is more than a year old. We have since continued to improve waveguide losses and other device characteristics.

A closer look at our Omega chipset. Designed by PsiQuantum and manufactured at GlobalFoundries.

Introducing Omega, the first manufacturable chipset for photonic quantum computing. Featured today in @nature.com and designed by PsiQuantum & manufactured at GlobalFoundries, it contains all the photonic components required for million-qubit-scale quantum computers. www.nature.com/articles/s41...

“That has really been our approach … to leverage the same fabs, the same contract manufacturers, as far as humanly possible the same networking and so on that is used in conventional data centers, conventional supercomputers ... And we think that gives us a much faster path.”

DARPA has advanced PsiQuantum into the final phase of the Utility-Scale Quantum Computing program. We’re proud to continue our partnership with DARPA, whose history of supporting emerging technologies has shaped the world—think GPS, robotics, and self-driving cars. www.psiquantum.com/featured-new...

DARPA has selected PsiQuantum for the final phase of the Utility-Scale Quantum Computing program evaluation. www.psiquantum.com/featured-news/darpa-final-phase ​

Our latest work with Boehringer Ingelheim shows the incredible progress made by both teams in preparing the algorithms which will simulate Cytochrome P450 and FeMoco, critical for pharmaceuticals and nitrogen fixation research, on large-scale quantum computers. Learn more:

Exciting results in quantum chemistry published w/ Boehringer Ingelheim brings us closer to calculating the exact electronic structure of Cytochrome P450 and FeMoco on a quantum computer, with >200X reduction in resources relative to state-of-the-art quantum algorithms. arxiv.org/abs/2501.06165

Quantum computing pioneers, join us at PsiQuantum! We're building the future & need a Senior Data Software Engineer. Work with cutting-edge tech, solve big problems, & shape industries. Let's make history together!

A 64x64 port high-speed BTO optical switch. The largest switches we plan to build for our first utility-scale systems are 128x128.

We’re thrilled to announce the opening of our Asia-Pacific HQ in Brisbane and unveil renderings of our quantum computing site near Brisbane Airport. This milestone celebrates Queensland’s quantum leadership and our collaboration with local and federal governments to scale this transformative tech.

Counting up to ~10 photons in a PsiQuantum waveguide-integrated photon-number-resolving superconducting detector. These detectors are mass-manufactured in the United States on 300mm wafers. Amplification here is done using our in-house low-power SiGe ASIC, running at cryogenic temperature.

Here’s Pete Shadbolt’s presentation at MIT Technology Review’s EmTech Summit, showing work that the company is doing to overcome hard technical challenges from the nanometer to kilometer scale.

A near-perfect (~1000 pm/V, ~few % uniformity) 300mm wafer of Barium Titanate, the material we have dreamed of for optical switching. Made by PsiQuantum in San Jose, California.