All Quantum Computing Posts
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Quantum Computing
Quantum Low-Density Parity-Check (qLDPC) Codes
Quantum Low-Density Parity-Check (qLDPC) codes are an emerging class of quantum error-correcting codes that promise to significantly reduce the overhead required for fault-tolerant quantum computing. Much like their classical LDPC counterparts, qLDPC codes are defined by sparse parity-check constraints: each check (stabilizer) acts on only a small number of qubits, and each qubit participates in only a few checks. This sparse structure can enable more…
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Quantum Systems Integration
Engineering the Quantum Operating System (OS) Stack: From Nanosecond Pulse Control to System-Level Orchestration
The argument for quantum computing's "PC moment" has become surprisingly compelling. QuantWare ships superconducting QPUs to customers in 22 countries. Qblox sells modular control stacks to over 100 labs. Bluefors has installed 1,800 cryogenic systems worldwide. The Quantum Open Architecture movement and reference designs like the Quantum Utility Block are proving that you can assemble a working quantum computer from commercial off-the-shelf components — much…
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Quantum Computing
Quantum Open Architecture (QOA): The “PC Moment” of Quantum Computing
Today, a sea change is underway. Quantum Open Architecture (QOA) is doing for quantum computing what the PC revolution did for classical computing - opening up the ecosystem. Just as the computing world shifted from monolithic mainframes to modular PCs with swappable parts, quantum tech is embracing modularity and specialization. Instead of one vendor building and owning the whole machine, different specialists provide the processor,…
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Quantum Computing
Silicon’s Hidden Advantage: How Biased Noise Could Slash the Cost of Quantum Error Correction
When people say "silicon quantum computing," they often speak as if it is one thing. It is not. It is at least three distinct approaches, built on the same material but employing different physics, different fabrication methods, and different strategies for reaching fault-tolerant scale. Understanding these differences — and the tradeoffs each makes — is essential for anyone tracking which version of silicon quantum computing…
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Quantum Ecosystem
What It Takes to Build a Quantum Computer: Mapping the Hidden Supply Chains Behind Every Modality
A map of the hidden supply chains behind every major quantum computing modality — and a guide to where value, risk, and strategic leverage actually sit. The headlines go to the companies designing quantum processors, but behind every qubit sits an ecosystem of enabling technologies without which the processor is just a blueprint: dilution refrigerators, precision laser systems, photonic foundries, ultra-high vacuum chambers, isotopically purified…
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Quantum Policies
How the EU Can Capture the Benefits of Quantum Computing
The European Union has entered the global quantum race with determination - aiming not just to excel in research, but to translate breakthroughs into economic and strategic benefits. In July 2025, the European Commission unveiled the Quantum Europe Strategy, a roadmap to make Europe a “quantum industrial powerhouse” by 2030. This strategy acknowledges Europe’s historic strength in quantum science - from pioneers like Planck and…
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Quantum Computing
Experimental Quantum Error Correction Below Threshold
When Harvard’s neutral-atom team quietly dropped their new paper on a fault-tolerant architecture for universal quantum computation, a few days ago, it felt like the field had crossed an invisible line. For years we’ve had impressive pieces of the puzzle - better qubits here, a clever code there, some elegant theory everywhere – but Lukin’s group managed to put all of the core ingredients of…
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Quantum Computing
A Quantum Contrarian Con Artist
In the growing spotlight on quantum technology, a new kind of opportunist is taking the stage - the contrarian con artist. These are not the honest skeptics who ask hard questions in good faith. They are bad-faith actors cloaking themselves in “skepticism” to hijack the discourse around quantum computing and its related fields. As investment and public interest pour into quantum computing - along with…
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