Constant-rate quantum codes with low-weight stabilizers and full logical Clifford actions via transversal and fold-transversal gates
A preprint on arXiv introduces a family of constant-rate quantum error-correcting codes whose stabilizer generators have low weight. The authors report that the full logical Clifford group can be performed using only transversal and fold-transversal gates, requiring no additional qubits.
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What this could mean
- 0–2 yearsPlausible
If these codes can be laid out on planar superconducting or reconfigurable neutral-atom devices, they could lower the qubit overhead for fault-tolerant Clifford operations in near-term logical-qubit demonstrations.
Transversal and fold-transversal gates do not require ancilla qubits and limit error propagation, while low-weight stabilizers ease syndrome extraction; constant-rate scaling keeps overhead bounded as code distance grows. The main preconditions are efficient decoders and hardware-compatible connectivity for the specific code family.
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