PsiQuantum
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psiquantum.bsky.social
PsiQuantum
@psiquantum.bsky.social
Building the world’s first useful quantum computers.
We’re excited to introduce Construct, the first purpose-built software platform for fault-tolerant quantum computing.​​
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Designing, developing, and optimizing fault-tolerant quantum algorithms. ​
September 17, 2025 at 3:15 PM
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.
May 3, 2025 at 4:23 PM
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.
April 3, 2025 at 3:57 PM
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.
March 19, 2025 at 8:40 PM
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).
March 12, 2025 at 4:25 PM
January 6, 2025 at 8:13 PM
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.
December 12, 2024 at 4:09 PM
November 29, 2024 at 6:37 PM