PsiQuantum vs EY
Side-by-side comparison of AI visibility scores, market position, and capabilities
Palo Alto photonic quantum computing at $7B valuation; $1B Series E (BlackRock/Temasek) Feb 2025 with Omega chipset and A$940M Australia QCC build targeting fault-tolerant quantum by 2027 competing with IBM Quantum.
About
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.
Big Four professional services partnership at $51.2B FY2024 revenue (+3.9%); CEO Janet Truncale launched EY.ai Agentic Platform with NVIDIA (150 agents, 80K professionals) competing with Deloitte and PwC for global audit and consulting.
About
EY (Ernst & Young) is a London-based global professional services partnership — one of the Big Four accounting and consulting firms — generating $51.2 billion in record annual revenue in fiscal year 2024 (+3.9%), with approximately 393,000 professionals operating across more than 700 offices in over 150 countries and territories. EY's roots trace to 1903 when Alwin C. Ernst and Theodore Ernst founded Ernst & Ernst in Cleveland, Ohio; the modern EY emerged from the historic 1989 merger of Ernst & Whinney and Arthur Young & Co. EY's integrated service model spans assurance (the highest-revenue segment among Big Four peers), consulting, strategy and transactions through EY-Parthenon (created via the 2014 acquisition of The Parthenon Group), and tax services. In July 2024, Janet Truncale became EY's Global Chair and CEO, the first woman to lead the firm. In 2025, EY launched the EY.ai Agentic Platform in partnership with NVIDIA, deploying 150 AI agents supporting 80,000 EY professionals across tax, risk, and finance domains to surpass 3 million tax compliance outcomes annually.
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