Terry Rudolph

PsiQuantum, from Palo Alto, is building a photonic quantum computer on chips made in a commercial GlobalFoundries fab, with sites in Brisbane and Chicago, and its Construct software for designing algorithms is open to anyone.

PsiQuantum at a glance

PsiQuantum wants to skip the small, experimental machines and go straight to a large, error-corrected quantum computer, what it calls the first utility-scale fault-tolerant quantum computer. Its qubits are particles of light travelling through silicon photonic chips, and those chips are made by GlobalFoundries in standard semiconductor fabs, with the aim of reaching millions of qubits.

The company is based in Palo Alto, California. Victor Peng, the former Xilinx CEO and AMD President, became interim CEO on 10 February 2026 and is now listed by the company as chief executive, while co-founder Jeremy O'Brien moved to executive chairman.

The hardware is built around the Omega chipset, made on 300mm wafers by GlobalFoundries and designed to scale to million-qubit processors. To house the machines, PsiQuantum is building two large sites. In Australia it partnered with the government on an A$620M facility in Brisbane, and Linde Engineering is contracted to deliver the cryogenic plant for the utility-scale machine in Queensland, targeting operational deployment by the end of 2027.

Its Asia-Pacific headquarters in Brisbane added a Test and Characterization lab at Griffith University in 2025, and on 26 May 2026 PsiQuantum opened its Test and Validation Lab at Griffith's Nathan Campus, ahead of the June 2026 groundbreaking at the Moreton Bay Central anchor site. In the US it broke ground in Chicago, Illinois, on what it describes as the largest quantum computing facility in the Americas.

It has advanced to DARPA QBI Stage C, the most advanced stage.

You can try PsiQuantum's software today. Construct, launched in September 2025, is a platform for designing fault-tolerant quantum algorithms, and it is now open access. It maps algorithms onto surface-code error correction and routes qubits across photonic chips using an Active Volume Architecture, which the company's paper estimates lets a 2048-bit factoring algorithm run 44 times faster than on a general-purpose architecture without non-local connections (the press release rounds this to 50x).

Construct includes Circuit Designer, a drag-and-drop tool for drawing and sharing quantum circuits, Resource Analyzer for spotting where an algorithm uses the most resources, and a Python development kit.

PsiQuantum has raised $1.67B or more in private funding, including a $1B Series E at a $7B valuation in 2025, a $450M Series D in 2021 and $215M through Series C. Government funding is counted separately and takes the combined figure past $3B. On 21 May 2026 it signed a non-binding $100 million letter of intent with the US Department of Commerce under the CHIPS and Science Act, aimed at domestic manufacturing of photonic quantum computing components including barium titanate optical switches, high-temperature single-photon detectors and advanced packaging.

On 8 September 2026 it signed the definitive documentation for that $100 million award.

Other work includes a $10.8M AFRL contract, a partnership with the National Cancer Center Japan on cancer treatment algorithm research, and collaborations with Airbus and Lockheed Martin on application-specific quantum solutions.

PsiQuantum signed a final CHIPS R&D award of up to $100 million with the US Department of Commerce for electro-optic materials, high-temperature single-photon detectors and photonic packaging. Government awards are not counted in the funding total. quantumzeitgeist.com

Brookhaven National Laboratory scientists will research new quantum algorithms using Construct, a software platform developed by PsiQuantum , in a collaboration designed to accelerate development of fault-tolerant quantum computers. quantumzeitgeist.com

Niklas Zennström will assist PsiQuantum with scaling quantum computers. quantumzeitgeist.com

PsiQuantum detailed liquid helium cooling for its 100-cabinet quantum computer design. quantumzeitgeist.com

PsiQuantum invested 250,000 dollars in South Chicago quantum workforce development. quantumzeitgeist.com

PsiQuantum signed a $125M performance-based agreement with DARPA, its largest US government award, expanding validation work across its Milpitas and Chicago sites. quantumzeitgeist.com

PsiQuantum appointed Rob Soderbery as EVP and Sriram Sitaraman as CIO to strengthen its leadership team. quantumzeitgeist.com

PsiQuantum is constructing a facility in Australia to build the world’s first utility-scale, fault-tolerant quantum computer. quantumzeitgeist.com

PsiQuantum has secured a new site at Moreton Bay Central in Australia to build the world’s first utility-scale quantum computer. quantumzeitgeist.com

PsiQuantum is building its first utility-scale quantum computer at Moreton Bay Central in Brisbane. quantumzeitgeist.com

PsiQuantum welcomed Intel CEO Lip-Bu Tan to its Board of Directors. quantumzeitgeist.com

Illinois plans a $20 billion quantum computing campus in Chicago that will be spearheaded by PsiQuantum. quantumzeitgeist.com

PsiQuantum launched Circuit Designer, a new open-access web application to simplify and accelerate the creation and sharing of quantum circuit diagrams for researchers. quantumzeitgeist.com

PsiQuantum announced leadership changes, naming Victor Peng as interim CEO to accelerate deployment of utility-scale quantum computers by 2026. quantumzeitgeist.com

PsiQuantum advanced its photonic quantum computer toward practical applications after completing all milestones in DARPA’s Engineering with Quantum Systems program. quantumzeitgeist.com

PsiQuantum started construction on a large-scale quantum computing project in Chicago to advance fault-tolerant quantum processors. quantumzeitgeist.com

PsiQuantum launched the Active Volume Architecture, a tool that reduces quantum algorithm running costs for factoring by approximately 50 times. quantumzeitgeist.com

You've reached the limit of free company profiles

Quantum photonics companies build photon sources, single-photon detectors, and integrated photonic chips. Their work spans both computing and networking.

Quantum processor companies design and fabricate the QPUs at the heart of quantum computers. They compete mainly on qubit count and gate fidelity.

PsiQuantum quantum hardware

DARPA US2QC utility-scale quantum computer

Commercial fault-tolerant system - 1M physical qubits target

NVIDIA CUDA-Q integration (450x speedup). Airbus QuLAB partnership. $1B Chicago + Brisbane build-out underway.

$1B Series E at $7B valuation (BlackRock, Temasek, Baillie Gifford, NVentures)

Omega chipset - 99.98% single-qubit prep, 99.22% two-qubit fusion fidelity

DARPA US2QC Phase 3 selection

GlobalFoundries 300mm wafer manufacturing partnership

Fidelities are conditional on photon detection and do not account for loss, which is the dominant error channel in a photonic architecture. Not directly comparable to gate fidelities quoted for trapped-ion or superconducting systems. 99.98% is state preparation and measurement fidelity, not a single-qubit gate fidelity. No physical or logical qubit count has ever been published; the 1M qubit figure is a roadmap target with no committed date.

No demonstrated qubit count published as of 10 September 2026. No physical or logical qubit count has been published; the Omega chipset (Nature, May 2025) gives fidelities only (

PsiQuantum software and frameworks

Meta-package for PsiQuantum's Quantum Development Kit; install once to pull in workbench, algorithms, and visualization at compatible versions

Circuit Hub is a centralized repository for storing and sharing .circuit files used by Circuit Designer. It serves as a growing library of example, research, and community-contributed quantum circuits.

Quantum Resource Estimate Format

An open-access drag-and-drop tool in PsiQuantum Construct for building, exploring and sharing publication-ready quantum circuit diagrams.

A visual tool in PsiQuantum Construct that shows where a fault-tolerant algorithm spends its resources, so you can find and fix the bottlenecks.

PsiQuantum's open access software platform for fault-tolerant algorithm work, with Circuit Designer, Resource Analyzer and a Python development kit (Workbench) that simulates, compiles and produces resource estimates.

Hardware and Services

A photonic quantum chipset designed by PsiQuantum and made at GlobalFoundries in New York, described in a February 2025 Nature paper. The company reports 99.98% single-qubit state preparation and measurement fidelity, 99.5% two-photon interference visibility and 99.72% chip-to-chip interconnect fidelity.

PsiQuantum error correction

Codes and published results, each read against its paper or announcement. A code that only detects errors, or a result kept by discarding runs, is labelled as such. All QEC results

Stage 0 of 5 on our error-correction ladder: no logical qubit yet. How it compares

Fusion-based quantum computation (FBQC) with loss-tolerant foliated codes · Stated path, 2021

Active volume architecture (surface-code based, non-local connections) · Research, 2022

PsiQuantum partnerships and collaborations

PsiQuantum is partnering with Airbus to develop fault-tolerant quantum algorithms for aerospace applications.

CUDA-Q integration into Construct software suite (450x speedup)

Photonic chip fabrication partnership

Microsoft invested in PsiQuantum's manufacturing-scale photonic quantum computing approach

PsiQuantum co-founded by Jeremy O'Brien from Bristol; ongoing photonic quantum computing research collaboration

PsiQuantum Construct platform used in NEDO-funded Japan quantum workforce program with Mitsubishi Chemical and University of Tokyo (2025-2027)

PsiQuantum is partnering with the University of Tokyo and Mitsubishi Chemical to train over 80 professionals in Japan.

PsiQuantum and NCCN Japan will collaborate to accelerate drug discovery for cancer treatment using utility-scale quantum computing.

PsiQuantum announced a collaboration with Brookhaven National Laboratory to use PsiQuantum's Construct software platform for research into fault-tolerant quantum computers.

Named as a partner by

8 organisations record a partnership with PsiQuantum that this profile does not list.

What PsiQuantum has delivered, and what it has said is .

2027 Utility-scale fault-tolerant system (1M qubits) planned Brisbane and Chicago facilities targeting operational deployment.

Brisbane and Chicago facilities targeting operational deployment.

2025 Omega chipset and DARPA US2QC Phase 3 achieved 99.22% two-qubit fusion fidelity; advanced to DARPA QBI Stage C.

99.22% two-qubit fusion fidelity; advanced to DARPA QBI Stage C.

2024 GlobalFoundries 300mm wafer manufacturing achieved Photonic chips fabricated in a standard silicon foundry.

Photonic chips fabricated in a standard silicon foundry.

PsiQuantum founders and leadership

Interim CEO, Feb 2026

Co-founder, Executive Chairman

Co-founder, Chief Architect

Co-founder, Chief Technologist

Co-founder, Chief Scientific Officer

PsiQuantum applications

Uses existing semiconductor manufacturing infrastructure (GlobalFoundries) and telecom optical fiber for scalability and cost-effectiveness.

Quantum Processor Systems

Hardware systems available or in development

PsiQuantum and the CHIPS Act

Final CHIPS R&D award of up to $100 million, signed with the US Department of Commerce on 8 September 2026. These awards are not counted as venture capital raised. CHIPS Act quantum awards

PsiQuantum funding and investors

$1.67B+ private ($1B Series E Sep 2025 at $7B valuation led by BlackRock, Temasek and Baillie Gifford; $450M Series D Jul 2021; ~$215M through Series C). Government funding is separate and not counted here: A$940M Australian package (2024), $200M Illinois incentive package, $125M DARPA agreement (Jul 2026).

Investors that list PsiQuantum in their portfolio: Microsoft M12 , BlackRock , Temasek , Baillie Gifford , NVentures , Playground Global , National Security Strategic Investment Fund , M&G Investments .

Every US private raise is filed on Form D with the SEC. Filed by PsiQuantum, Corp. (CIK 2070804); matched because the filer name equals the recorded name and the business city (PALO ALTO) matches. An offering is one raise, not a running total.

2025-05-30 $22,000,008 sold 1 investor · equity filing

Named in the latest filing: Jeremy O'Brien (executive officer, director); Pete Shadbolt (director); Jeff Brody (director); Peter Barrett (director); Aaron VanDevender (director); Siraj Khaliq (director).

Final CHIPS R&D award of up to $100 million, following a 21 May 2026 letter of intent, for electro-optic materials, high-temperature single-photon detectors and photonic packaging.

PsiQuantum secured a $125 million DARPA agreement to validate its approach to building utility-scale quantum computers, advancing its unique quantum designs.

PsiQuantum secured nearly $1 billion in Australian government funding to scale its quantum computing to a million qubits, one of the largest VC rounds in the field.

$1B Series E led by BlackRock with Temasek and Baillie Gifford, valuing the company at $7B. Existing investors Blackbird and Third Point Ventures also took part. Announced alongside an NVIDIA collaboration.

Series C funding round

Series B funding round

PsiQuantum competitors

In-depth comparisons:

Latest PsiQuantum news

Can PsiQuantum's Construct unlock faster quantum innovation?

New magnets aim to meet positron demands of 91km collider

PsiQuantum team shares R&D at IEEE Quantum Week in Toronto

PsiQuantum lands $100 million to build quantum parts in the US

PsiQuantum and Brookhaven Lab build tools for future quantum computers

Niklas Zennström to help PsiQuantum scale quantum computers

UChicago student builds quantum skills at PsiQuantum this summer

Liquid Helium Cools PsiQuantum’s 100-Cabinet Quantum Design

$250K PsiQuantum Investment Boosts South Chicago Quantum Workforce

$125M DARPA Agreement Validates PsiQuantum’s Quantum Designs

Soderbery, Sitaraman Join PsiQuantum’s Expanded Leadership

PRX Quantum: Quantum Correlations Spread in Space Using 10–20 Optical Modes

PsiQuantum Begins Building World’s First Utility-Scale Quantum Computer

$100M Letter of Intent Boosts PsiQuantum’s US Manufacturing

PsiQuantum Secures Site for World’s First Utility-Scale Quantum Computer

PsiQuantum Anchors Utility-Scale Quantum Computer Build at Moreton Bay Central

Lip-Bu Tan Joins PsiQuantum Board With Decades of Tech Scaling

Quantum Computing Company Of The Week

Japan Quantum Workforce Gains 80+ Professionals

PsiQuantum: A Closer Look At The $1bn Investment In Quantum

Pritzker’s $20 Billion Bet

PsiQuantum, NCCN Japan: Quantum Cancer Research

PsiQuantum’s Circuit Designer Simplifies Algorithms

PsiQuantum: Leadership Shift, 2026 Quantum Computing

PsiQuantum & Airbus Collaborate On Fault-Tolerant Quantum

PsiQuantum Breaks Ground On America’s Largest Quantum

DARPA Selects PsiQuantum To Advance To Final Phase

PsiQuantum Launches Construct, Tool For Fault‑Tolerant

PsiQuantum Raises $1bn To Build Million Qubit Quantum

Photonic Quantum Computing Advances With Fault Tolerant

PsiQuantum Targets 2027 for Quantum Computing

PsiQuantum: Government Advisory Board Formed

PsiQuantum, Hartree Centre Build UK Quantum Computing

Jacobs to Support New PsiQuantum Quantum Computing Facility

Lockheed Martin & PsiQuantum Advance Quantum Computing for Defense

PsiQuantum Launches Construct, Tool for Fault‑Tolerant Quantum Algorithms

PsiQuantum Raises $1bn To Build Million Qubit Quantum Fault‑Tolerant Computers

Photonic Quantum Computing Tolerates Qubit Loss, Enabling Fault Tolerance Say PsiQuantum

Nvidia To Invest in Quantum Computing Startup PsiQuantum, Signaling Shift in Approach

Quantum Simulation of Chemical Dynamics on Fault-Tolerant Computers: Framework for Real-Time Analysis From PsiQuantum and Stanford University

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Can PsiQuantum's Construct unlock faster quantum innovation?

PsiQuantum’s software was built to address the scale required for fault-tolerant quantum computing, offering tools to design algorithms, develop circuits, and estimate resources. This software, now available through the…

New magnets aim to meet positron demands of 91km collider

Researchers at PSI developed new superconducting magnets, aiming to meet the positron demands of CERN’s planned 91km Future Circular Collider.

PsiQuantum team shares R&D at IEEE Quantum Week in Toronto

At IEEE Quantum Week in Toronto, September 13-18, PsiQuantum team members will present R&D, including the open-access PsiQuantum Development Kit for fault-tolerant quantum algorithms.

PsiQuantum lands $100 million to build quantum parts in the US

PsiQuantum finalized a $100 million award with the U.S. Department of Commerce, boosting domestic quantum computing & semiconductor security.

PsiQuantum and Brookhaven Lab build tools for future quantum computers

PsiQuantum and the U.S. Department of Energy’s Brookhaven National Laboratory announced a collaboration leveraging PsiQuantum’s Construct software platform to support research into new algorithms and scientific…

Frequently asked questions PsiQuantum

PsiQuantum wants to skip the small, experimental machines and go straight to a large, error-corrected quantum computer, what it calls the first utility-scale fault-tolerant quantum computer. Its qubits are particles of light travelling through silicon photonic chips, and those chips are made by GlobalFoundries in standard semiconductor fabs, with the aim of reaching millions of qubits. The company is based in Palo Alto, California. Victor Peng, the former Xilinx CEO and AMD President, became ...

PsiQuantum is headquartered in Palo Alto, United States.

PsiQuantum was founded by Jeremy O'Brien, Terry Rudolph, Mark Thompson and Pete Shadbolt in 2016.

PsiQuantum was founded in 2016.

PsiQuantum works with Photonic quantum technology.

PsiQuantum operates in the following sectors: quantum photonics, quantum processors, quantum hardware, quantum simulation.

Funding recorded for PsiQuantum: $1.67B+ private.

PsiQuantum reports a two-qubit gate fidelity of 99.22%, a key measure of how accurately its quantum hardware performs entangling operations.

Investors that list PsiQuantum in their portfolio include Microsoft M12, BlackRock, Temasek, Baillie Gifford, NVentures and Playground Global and 2 more.

Companies working in the same areas as PsiQuantum include Ephos, OptQC, LIGENTEC, Aegiq and ORCA Computing.