🧠 Food for thought

Implications, context, and why it matters.

Alice & Bob is betting on a different path for quantum error correction

• Alice & Bob builds around “cat qubits,” a kind of quantum bit that cuts one of the two main error types at the hardware level 1.
• The design could shrink the physical qubits needed for a fault-tolerant machine by as much as 200 times versus rival approaches 2.
• That smaller footprint fits France’s PROQCIMA program, which aims to deliver two French-built prototypes of universal quantum computers by 2032 3.
• Nvidia’s backing also has a technical side. Alice & Bob is working with Nvidia’s CUDA-Q platform, a software toolkit for combining quantum and conventional computing, on hybrid quantum-classical workflows 1.

Tech independence is shaping the quantum race

• Governments want stronger control over this technology. “We have the means to be the winners of this race” 3, said Emmanuel Macron, president of France.
• Commercial returns still look far off. Alice & Bob targets a 100-logical-qubit machine by 2030, yet that scale would likely handle only narrow chemistry tasks while wider uses need millions of qubits 4.
• The field is moving toward hybrid setups where quantum processors serve as accelerators for conventional supercomputers, similar to GPUs in AI 2.