Quantum computing has been “five to ten years away” for roughly three decades. But in 2025, something has genuinely changed. We now have quantum processors with over 1,000 physical qubits, a handful of published demonstrations of quantum advantage on specific problems and a growing ecosystem of companies — not just labs — building real products on quantum hardware.
This is not to say your laptop will run on qubits next year. It will not. But the gap between quantum hype and quantum reality is narrowing, and the milestones being reached are significant enough that investors, governments and enterprise customers are taking notice.
Where the Hardware Stands
The quantum computing market in 2025 is a three-way race — plus China. IBM’s Condor processor, unveiled in late 2023, was the first to break the 1,000-qubit barrier at 1,121 qubits. Its successor, Heron, released in 2024, took a different approach: fewer qubits (133), but higher quality, with IBM claiming a fivefold improvement in error rates over its previous generation. The strategy reflects a broader industry realisation that qubit count is a vanity metric — what matters is the number of useful, error-corrected logical qubits you can actually run algorithms on.
Google’s Sycamore processor made headlines in 2019 when it completed a calculation in 200 seconds that the company claimed would take a classical supercomputer 10,000 years (a claim IBM immediately disputed). Google’s more recent work, published in Nature in 2024, demonstrated quantum error correction at a scale that actually reduced the error rate as the number of physical qubits increased — a critical milestone known as “below threshold.” Without error correction, quantum computers remain laboratory curiosities. With it, they become machines.
IonQ, which went public via SPAC in 2021, takes a fundamentally different approach using trapped ions rather than superconducting circuits. Its Forte system uses 36 algorithmic qubits (a measure of usable, high-fidelity qubits rather than raw physical qubit count), and the company reported $79 million in revenue in 2024 — primarily from cloud access to its quantum computers and consulting engagements. IonQ’s share price has been volatile, reflecting the broader uncertainty about when quantum computing will generate meaningful commercial returns.
What Quantum Can Actually Do
The short answer: not much that is commercially useful, yet. But the “yet” is doing a lot of work. The long answer is more interesting.
Quantum computers excel at problems that involve simulating quantum mechanical systems — which, conveniently, is exactly what chemical reactions and material properties are. Pharmaceutical companies, including Roche, Merck and Biogen, are funding quantum computing research aimed at drug discovery. The logic is straightforward: if a quantum computer can accurately simulate how a candidate drug molecule interacts with a target protein, it could dramatically accelerate the early stages of drug development. D-Wave Systems, the Canadian quantum pioneer, has focused on quantum annealing — a different approach suited to optimisation problems — and counts Volkswagen, Lockheed Martin and the US Department of Energy among its customers.
Quantum computing also has potential applications in financial modelling, logistics optimisation and cryptography. The last one is a double-edged sword: Shor’s algorithm, if run on a sufficiently powerful quantum computer, could break the RSA encryption that underpins most internet security. The timeline for that is still measured in decades, but governments are already preparing. The US National Institute of Standards and Technology (NIST) released its first set of post-quantum cryptography standards in 2024, designed to resist attacks from both classical and quantum computers.
Who Is Investing
Global government spending on quantum computing research exceeds $30 billion, according to McKinsey. China has committed roughly $15 billion, the European Union €7 billion, and the United States about $5 billion through various Department of Energy and Department of Defense programmes. China is particularly focused: it leads the world in quantum communication patents and launched the world’s first quantum satellite, Micius, in 2016.
Private investment is smaller but growing. CB Insights tracked $1.8 billion in quantum computing startup funding in 2024, down from the peak of $2.4 billion in 2022 but still well above pre-2020 levels. The leading private companies — PsiQuantum, Xanadu, Rigetti, QC Ware — are exploring photonic quantum computing, cloud-based quantum access and quantum software development tools.
Realistic Timeline
The consensus among physicists and industry analysts is that we are likely 5-10 years from the first commercially useful quantum computer — one that can solve a problem cheaper or faster than a classical computer for a paying customer. Widespread enterprise adoption is probably 15-20 years away. But the building blocks — better qubits, error correction, cloud access — are being assembled now. The quantum computing industry in 2025 feels a lot like the internet in 1993: most people cannot see the use case yet, but the infrastructure is being built.