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Company Overview
About PsiQuantum
PsiQuantum is a Palo Alto, California-based photonic quantum computing company — backed with $700+ million in total funding including a $1 billion Series E in February 2025 led by BlackRock, Temasek, and Baillie Gifford (with NVIDIA NVentures participation) at a $7 billion valuation — building utility-scale fault-tolerant quantum computers using silicon photonic chip technology manufactured through an exclusive partnership with GlobalFoundries at commercial semiconductor foundries rather than bespoke quantum hardware. In February 2025, PsiQuantum announced the Omega chipset — the first manufacturable chipset for photonic quantum computing, integrating high-performance single-photon sources, superconducting single-photon detectors, and next-generation optical switches with 99.98% single-qubit fidelity and 99.22% two-qubit fusion gate fidelity. PsiQuantum is building Quantum Compute Centers in Brisbane, Australia (backed by A$940 million from Australian and Queensland governments) and Chicago, Illinois, targeting operational systems by end of 2027. Founded in 2017 by Jeremy O'Brien, Terry Rudolph, Mark Thompson, and Pete Shadbolt.
Business Model & Competitive Advantage
PsiQuantum's photonic quantum computing architecture addresses the fundamental scalability challenge that limits superconducting and trapped-ion quantum systems: both IBM/Google (superconducting) and Quantinuum/IonQ (trapped-ion) require cryogenic environments at 10-15 millikelvin (requiring expensive dilution refrigerators) and face qubit count limitations from the engineering complexity of maintaining coherence across hundreds of physical qubits. PsiQuantum's photonic approach (using single photons as qubits, manipulated through silicon photonic waveguides fabricated using standard CMOS chip manufacturing processes) enables production scaling through existing semiconductor fabs — GlobalFoundries manufactures PsiQuantum's chips at volumes that dilution refrigerator-based systems cannot match. The tradeoff is that photonic fusion gates require resource-intensive error correction, making the path to fault-tolerant systems hardware-demanding — but the manufacturing scalability advantage (silicon photonic chips can be produced in the millions by commercial fabs) is the thesis for why PsiQuantum can build the million-physical-qubit systems that fault-tolerant quantum computing requires.
Competitive Landscape 2025–2026
In 2025, PsiQuantum competes in the fault-tolerant quantum computing, photonic quantum, and quantum infrastructure market with IBM Quantum (NYSE: IBM, 1,000+ qubit Eagle/Condor systems), Quantinuum (Honeywell majority-owned, trapped-ion, $5B valuation), and Google Quantum AI (NASDAQ: GOOGL, Willow 105-qubit chip) for government quantum infrastructure investment, enterprise quantum readiness programs, and quantum advantage application development partnerships. The $1 billion Series E reflects institutional investor conviction (BlackRock, Temasek) that fault-tolerant quantum computing warrants infrastructure-scale investment. Australian government backing (A$940M) and Chicago QCC development provide national-level quantum infrastructure commitments that validate PsiQuantum's timeline. The 2025 strategy focuses on completing the Omega chipset integration testing, securing additional government partnerships for Quantum Compute Center development, and advancing the quantum error correction research that bridges current chip performance to fault-tolerant logical qubit operations at the scale required for utility-scale computation.
The PsiQuantum Story
Founders
Recent Activity
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Major milestones in PsiQuantum's journey
Leadership Team
Meet the leaders behind PsiQuantum
Jeremy O'Brien
Jeremy O'Brien is the co-founder and CEO of PsiQuantum. He is a distinguished physicist who previously led quantum research at the University of Bristol and is a pioneer in photonic quantum computing. O'Brien leads the company's vision to build the world's first utility-scale quantum computer.
Mark Thompson
Mark Thompson is co-founder and Chief Technology Officer of PsiQuantum, overseeing the company's technology development and engineering efforts. He brings extensive experience in silicon photonics and quantum information science.
Peter Shadbolt
Peter Shadbolt is co-founder and Chief Scientific Officer of PsiQuantum. A leading quantum physicist, he directs the company's scientific strategy and research programs, bringing deep expertise in photonic quantum systems.
Terry Rudolph
Terry Rudolph is a co-founder of PsiQuantum and a renowned theoretical physicist who previously held positions at Imperial College London. His theoretical work has been foundational to photonic quantum computing approaches.
Susan Kim
Susan Kim joined PsiQuantum as CFO in 2024, bringing extensive financial leadership experience to support the company's growth and the development of its quantum computing facilities.
Key Differentiators
Emerging Innovator
PsiQuantum is an emerging player bringing innovative solutions to the Technology market.
Frequently Asked Questions
Estimated Visibility Trend (Beta)
Simulated 8-week rolling score
Based on estimated brand signals. Historical tracking coming soon.
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