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Quantum Computing Companies
IonQ
IonQ is a publicly traded leader in trapped‑ion quantum computing whose strategy is to reach useful fault tolerance with fewer physical qubits by maximizing fidelity, connectivity, and modularity. Rather than racing raw qubit counts in noisy regimes, IonQ’s thesis is…
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Quantum Computing Companies
Intel
Intel’s quantum computing program has carved a distinctive path, marrying cutting-edge quantum research with the might of advanced silicon manufacturing. Over the past several years, Intel progressed from superconducting qubit test chips (17 and 49 qubits) to a focus on…
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Industry
Dutch Quantum Ecosystem Unveils “Tuna-5” Open-Architecture Quantum Computer
The Dutch quantum computing community has reached a new milestone, revealing a homegrown quantum computer named Tuna-5. Announced in mid-May 2025, the Tuna-5 system is a 5-qubit superconducting quantum computer built using a modular “open-architecture” approach, and it’s now accessible…
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Quantum Computing Companies
Infleqtion
Infleqtion (formerly known as ColdQuanta) is a leading quantum technology company focused on gate-based quantum computing built on neutral atoms. By leveraging optically trapped atomic qubits, Infleqtion aims to deliver scalable, high-fidelity quantum processors with a clear path toward fault-tolerance…
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Quantum Computing Companies
Aegiq
Aegiq is a UK-based quantum technology startup (spun out from the University of Sheffield in 2019) that focuses on building full-stack photonic quantum computing systems. The company initially gained recognition for its work in quantum networking and quantum key distribution…
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Quantum Computing Companies
IBM
IBM has laid out one of the most detailed and aggressive quantum computing roadmaps in the industry. Over the past few years, IBM Quantum has consistently hit its interim milestones, expanding both the scale of its processors and the sophistication…
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Quantum Computing Companies
Google
Google is a frontrunner in the quest to build practical quantum computers. The company made headlines in 2019 by achieving quantum supremacy – using its 53-qubit Sycamore processor to perform in about 200 seconds a task that was estimated to…
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Quantum Computing Companies
Diraq
Diraq is an Australian quantum computing startup (founded in 2022 as a spin-off from UNSW Sydney by Professor Andrew Dzurak) focused on building large-scale quantum processors based on silicon-based spin qubits. The company’s strategy is to leverage standard silicon CMOS…
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Quantum Computing Companies
D-Wave Systems
D-Wave Systems is a pioneer in quantum computing known for its unique focus on quantum annealing - a specialized analog approach distinct from the gate-based quantum processors pursued by most competitors. Founded in 1999, D-Wave became the first company to…
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Quantum Computing Companies
Atom Computing
Atom Computing is a fast-rising startup developing gate-based quantum computers using optically trapped neutral atoms as qubits. The company made headlines in late 2023 by announcing a 1,225-site optical atom array populated with 1,180 qubits - the first universal quantum…
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Quantum Computing Companies
Amazon AWS
Amazon has taken a dual approach to quantum computing, combining cutting-edge hardware research with commercial cloud services. On the R&D side, Amazon Web Services (AWS) established the AWS Center for Quantum Computing at Caltech in 2019, explicitly aiming to build…
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Quantum Computing Companies
Alice & Bob
Alice & Bob is a Paris-based quantum computing startup (founded in Feb 2020 by Dr. Théau Peronnin and Dr. Raphaël Lescanne) focused on building a universal, fault-tolerant quantum computer using a novel “cat qubit” architecture. The company’s approach leverages superconducting…
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Quantum Sovereignty
Quantum Human Capital Controls as Geopolitics
Quantum sovereignty is talent-constrained. In the race for quantum technology leadership, a skilled workforce has become a strategic asset - and a policy battleground. Nations are increasingly treating talent as a key lever of geopolitics, shaping immigration visas, research-security screening,…
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Quantum Computing Modalities
Quantum Computing Modalities: Superconducting Cat Qubits
Superconducting cat qubits are an emerging approach to quantum computing that still uses superconducting circuits but encodes each qubit in a bosonic mode - typically a microwave resonator - as a Schrödinger “cat” state (a superposition of two coherent states).…
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Quantum Security & PQC
Europe’s New Cryptographic Rulebook Just Made PQC Official
30 Apr 2025 - For years, the EU's position on post-quantum cryptography could be summarized as "we're watching closely." That changed in April 2025, when the European Cybersecurity Certification Group - the body that decides which cryptographic mechanisms are acceptable…
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