Barclays analysts say quantum computing investment is underestimated
Updated
Updated · Barron's · May 6
Barclays analysts say quantum computing investment is underestimated
5 articles · Updated · Barron's · May 6
They forecast real-world quantum superiority over classical computers by 2027 and fault-tolerant systems by 2030, with 100 logical qubits seen as the threshold for proving advantage.
Barclays says quantum will complement, not replace, classical computing, and estimates related classical-computing demand could reach $100 billion by 2040, partly driven by GPU-heavy quantum error correction.
The bank identified 45 listed and 80 private companies across the quantum value chain, from pure plays and chip suppliers to cloud, software and semiconductor equipment groups.
Can the quantum boom survive its dependence on supply chains controlled by geopolitical rivals and strained by AI's demands?
With quantum threats arriving years ahead of schedule, is the race to secure our digital world already being lost?
Quantum Computing’s 2026-2027 Inflection Point: Roadmaps, Risks, and the $100B Classical Symbiosis
Overview
Quantum computing is approaching a critical milestone with initial quantum advantage expected by 2026-2027, driven by breakthroughs in quantum error correction and real-world validation from financial institutions like Barclays. These advances reduce the complexity of fault tolerance, though full fault-tolerant systems are targeted around 2029. Quantum computers rely heavily on classical computing, especially GPUs, to manage error correction, creating a $100 billion+ market by 2040. In hardware, trapped-ion systems lead in qubit fidelity but face scaling challenges, while silicon-spin qubits offer better manufacturing scalability. Meanwhile, the banking sector actively explores quantum applications and strengthens defenses against rising cyber threats by adopting post-quantum cryptography. Investment surges fuel growth but also bring risks of hype and technical hurdles.