Quantum computing continues to attract capital and corporate R&D as companies race to improve both the accuracy and speed needed for practical, fault-tolerant systems. Rather than backing a single technology path, some investors are using a “basket” approach that spreads exposure across trapped-ion, superconducting, annealing, and neutral-atom platforms.
Below is a technology-focused look at several companies highlighted for their progress in key performance metrics such as two-qubit or logical fidelity, along with the different qubit modalities they are pursuing.
Key takeaways
- Trapped-ion leads on accuracy: IonQ and Quantinuum are both emphasizing high gate fidelity using trapped-ion architectures.
- Superconducting targets speed: D-Wave’s shift toward a gate-model system aims to combine higher accuracy with the faster characteristics of superconducting qubits.
- Neutral atoms seek a “best of both worlds”: Infleqtion is pursuing neutral-atom qubits to increase qubit density while working toward trapped-ion-like accuracy.
- IBM brings industrial scale: IBM is continuing heavy investment in quantum hardware and supporting technologies, including a quantum “fridge” concept tied to error reduction and scaling.
What drives the push in quantum hardware
The race in quantum computing is being shaped by two practical engineering constraints: maintaining sufficiently low error rates long enough to run computations, and doing so at speeds fast enough to be competitive for real workloads. In the companies covered, the central theme is improving fidelity—how reliably the system performs quantum operations—while also working toward architectures that can scale beyond small demonstrations.
According to the report, investors viewing the sector through a basket lens may be better positioned because different technical approaches may reach milestones at different times, and not every platform will ultimately translate lab performance into useful, fault-tolerant systems.
Trapped-ion accuracy: IonQ and Quantinuum
IonQ is highlighted as a trapped-ion specialist with an added integration approach: the company embeds microwave antennas directly into its chips. The article cites IonQ’s reported progress in gate fidelity, including 99.99% two-qubit gate fidelity. It also points to IonQ’s demonstration of what it called the industry’s first end-to-end real-time quantum error correction decoder, a milestone aimed at moving toward fault-tolerant quantum computing.
Beyond hardware, the article says IonQ has pursued acquisitions across parts of the quantum ecosystem, including an alleged quantum foundry intended to accelerate prototypes and scaling.
Quantinuum is presented as another trapped-ion accuracy leader. The report cites 99.92% 2-qubit gate fidelity. It also notes that with its “Sol” system, Quantinuum expects to reach 99.999% logical fidelity in 2027. The company’s software stack is also emphasized: the article describes an open-source quantum language called Guppy that it says corrects errors in code, plus a quantum software development kit designed to translate quantum codes between representations, all tied together through a platform referred to as Nexus.
Superconducting and annealing paths: D-Wave’s gate-model strategy
D-Wave is positioned as a leader in quantum annealing, an approach the article characterizes as already used in commercial applications. However, the company is also pursuing gate-based ambitions. The report says D-Wave plans to use fluxonium qubits—described as a type of superconducting qubit—with characteristics comparable to its existing annealing technology.
The article also cites D-Wave’s acquisition of Quantum Circuits, aimed at providing a dual-rail gate-model processor with built-in error detection. The stated goal, according to the report, is to create a system that targets trapped-ion-level accuracy while achieving the speed benefits associated with superconducting qubits.
Neutral atoms for density and speed: Infleqtion
Infleqtion is highlighted for a neutral-atom approach to quantum sensing and precision tools, with the article arguing that neutral atoms could provide an architecture similar in spirit to trapped-ion systems. The key difference cited is that the atoms are uncharged, which the report says can allow higher qubit density because they do not repel each other in the same way ions do.
The report ties Infleqtion’s objective to improving both fidelity and speed. It cites 99.73% 2-gate fidelity achieved in 2024 and says the company expects to reach 99.9% this year.
IBM’s scale-up bet: hardware, investment, and error-reduction concepts
IBM is discussed separately as a more mature company, but one that the article says is heavily invested in quantum computing’s long-term prospects. The report characterizes IBM’s approach as a classical superconducting qubit modality, noting it is currently less accurate than trapped-ion methods while being exponentially faster.
According to the article, IBM’s advantage is the ability to allocate substantial resources to quantum research. It cites a plan to invest more than $10 billion in quantum technology over the next five years. The company’s latest innovation highlighted in the report is a quantum “fridge” intended to support error reduction and scaling, with an end goal of introducing what it describes as the world’s first fault-tolerant quantum computer in 2029.
What to watch next
Investors tracking this space will likely focus on whether companies can sustain improvements in fidelity and error correction beyond early demonstrations, and whether they can translate hardware milestones into scalable systems. Near-term catalysts to monitor include updates on fault-tolerance progress and error-correction performance, as well as upcoming corporate disclosures and broader industry timing tied to qubit scaling and system reliability.
