Modular fault-tolerant quantum computing on a non-CSS code
A preprint on arXiv presents a scheme for fault-tolerant quantum computation using a non-CSS code across modular quantum processors. The approach partitions qubits into modules connected by quantum channels, which may be implemented through physical qubit routing or teleportation. The work addresses how error correction for a non-CSS code can be organized under those modular constraints.
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What this could mean
- 0–2 yearsPlausible
This could make it practical for small quantum modules to run a non-CSS code with fault tolerance, if teleportation-based interconnects can support the required stabilizer measurements.
Non-CSS codes can offer favorable logical gate sets or thresholds, but they are harder to implement monolithically. Modular decomposition with channels could lower the overhead for such codes on near-term hardware with limited qubits per module.
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