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Building Quantum Computers
Building a Silicon-Spin Quantum Computer
Silicon-spin qubits are manufactured on the same 300 mm semiconductor lines that produce classical processors. They operate at 1 K instead of 10 millikelvin. They eliminate helium-3. The supply chain is young but the thesis is compelling.
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Building Quantum Computers
Building a Photonic Quantum Computer
Photonic quantum computing encodes information in particles of light on silicon chips fabricated at semiconductor foundries. The core processor runs at room temperature. The supply chain is vertically integrated. Here is what that means for builders.
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Building Quantum Computers
Building a Neutral-Atom Quantum Computer
No dilution refrigerator. No helium-3. No chilled-water plant. Neutral-atom quantum computers run at room temperature in standard server racks, and Pasqal has deployed them into production HPC centers across three continents.
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Building Quantum Computers
Building a Trapped-Ion Quantum Computer
Trapped-ion quantum computers trade the cryogenic infrastructure of superconducting systems for a different set of challenges: precision laser systems, ultra-high vacuum, and the QCCD architecture that shuttles ions between functional zones.
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Building Quantum Computers
Building a Superconducting Quantum Computer
The complete integration guide for assembling a superconducting quantum computer from modular components. Signal chain engineering, cryostat selection, calibration sequences, and the operational reality of keeping transmon qubits running at 10 millikelvin.
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Building Quantum Computers
The Cryogenic Infrastructure That Makes (or Breaks) a Quantum Computer
The dilution refrigerator is the most expensive, longest-lead, and physically largest component in a superconducting quantum computer. The helium-3 it runs on comes from nuclear weapons stockpile decay. Both define the scaling ceiling.
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Building Quantum Computers
Preparing a Facility for a Quantum Computer
A superconducting quantum computer is not a server rack. This guide covers the facility requirements that most data centers cannot accommodate, from vibration isolation to helium-3 storage, with a reference floor plan.
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Building Quantum Computers
You Can Now Build a Quantum Computer from Off-the-Shelf Components
In March 2026, a consortium in Denver assembled a working quantum computer from five different vendors' components in five months. A Dutch QPU, Dutch control electronics, an American cryostat, Australian calibration software, supply chain spanning three continents, integration in Colorado.…
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Industry
France Answers the US CHIPS Act in 24 Hours, and NVIDIA Is Buying a Seat at Every Table
Macron added €1 billion to France's quantum strategy the day after the US committed $2 billion to quantum fabs. France's total quantum commitment now stands at €3.3 billion, and NVIDIA's investment in Alice & Bob landed the same afternoon.
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Industry
Washington Isn’t Funding Quantum Research. It’s Building Quantum Factories.
Washington's $2 billion CHIPS Act quantum package isn't a research program. It's industrial policy — the U.S. is building quantum fabs, and that changes the calculus for everyone tracking the CRQC timeline.
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Post-Quantum, PQC, Quantum Security
“They’ll Just Rent One”: The Quantum Threat Model Nobody Bothered to Check
Every article about quantum threats includes the throwaway line: criminals won't need their own quantum computer, they'll just rent one. The actual evidence says otherwise.
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PQC Governance
PQC Governance: Who Should Lead Your Post-Quantum Migration, and How to Structure the Program
PQC migration is the most complex cryptographic transformation in enterprise history. Getting the governance model right determines whether it succeeds or stalls. Here's how to structure it.
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Policy & Sovereignty
G7 Central Banks Publish First Quantum Technologies Report for the Financial Sector
Eight G7 central banks have published their first joint quantum report, expanding the conversation beyond PQC migration to address quantum computing applications, sensing risks, and system-level dependencies across the financial sector.
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Research
Jiuzhang 4.0: China’s 1,024-Input Photonic Processor Claims 10⁵⁴ Speedup
Pan Jian-Wei's team published a rigorous Nature paper showing an order-of-magnitude leap in photonic quantum scale. The engineering is impressive. The "quantum supremacy" framing from state media is a different matter entirely.
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Quantum Security & PQC
NIST Narrows the Field: Nine Post-Quantum Signature Candidates Advance to the Third Round
NIST just narrowed 14 post-quantum signature candidates to nine. The survivors span four distinct mathematical families, from isogeny-based compact signatures to multivariate schemes under active cryptanalytic fire. Here's what each candidate is, why NIST kept it, and what this means…
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