Key Points
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IonQ and Quantinuum’s trapped‑ion technology delivers an accuracy edge in quantum operations.
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Infleqtion’s neutral‑atom platform offers a promising alternative with potential for higher qubit density and faster performance.
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D‑Wave is extending its quantum‑annealing expertise into broader gate‑based quantum systems.
Leading AI research organizations such as Anthropic, OpenAI, and SpaceX have recently urged a more measured pace of AI development, citing safety concerns. The resulting uncertainty in the AI market has shifted investor attention toward quantum computing, a field that remains in early stages but benefits from substantial government backing and rapid technological progress.
Let’s look at four quantum computing stocks to consider buying.
1. IonQ
One of the biggest challenges for quantum computing is achieving reliable results, and IonQ (NYSE: IONQ) currently leads the industry in accuracy. The company employs a trapped‑ion approach combined with on‑chip microwave antennas, achieving a 99.99 % two‑qubit fidelity—the highest benchmark in the sector. IonQ is also building a comprehensive quantum ecosystem through acquisitions in quantum networking, transmission, sensing, and a dedicated quantum foundry, positioning it for faster prototype development and future scaling.
2. Quantinuum
Backed by Honeywell, Quantinuum (NASDAQ: QNT) also leverages trapped‑ion technology but opts for a different antenna design to prioritize speed. The firm has posted a 99.92 % two‑qubit gate fidelity and aims for 99.999 % logical fidelity with its upcoming Sol system in 2027. Quantinuum’s software offerings, including the open‑source Guppy language and the TKET SDK, provide advanced error correction and universal quantum algorithm translation, while its Nexus platform streamlines quantum workflow deployment.
3. Infleqtion
Infleqtion (NYSE: INFQ) pursues a neutral‑atom approach that suspends uncharged atoms in a vacuum and manipulates them with lasers. Because neutral atoms do not repel each other, this method can support higher qubit densities and potentially match trapped‑ion accuracy at faster speeds. The company recorded a 99.73 % two‑gate fidelity in 2024 and targets 99.9 % this year. In addition to its quantum‑computing research, Infleqtion supplies quantum‑sensing and precision‑timing solutions to U.S. and U.K. government agencies, creating a steady revenue stream and strong governmental ties.
Image source: Getty Images.
4. D-Wave
D‑Wave (NASDAQ: QBTS) specializes in quantum annealing, an optimization technique used in logistics, defense, and finance. Its Advantage II systems are already deployed in commercial settings. The company is now extending its annealing expertise to gate‑based quantum computing, utilizing fluxonium qubits that combine the stability of its annealing hardware with the speed of superconducting platforms. A recent acquisition of Quantum Circuits gave D‑Wave a dual‑rail gate‑model processor with built‑in error detection. The long‑term goal is to merge the high accuracy of trapped‑ion systems with the rapid performance of superconducting qubits, a combination that could place the firm at the forefront of the quantum race.
