Quantum Error Correction

The Azure Quantum team has proposed a 4D geometry-based error correction code that can be used across various hardware types (neutrons, ions, chips). They estimate that it can reduce the error rate from 0.1% per 1,000 physical qubits to 0.0001% for logical qubits. Microsoft and their partner Atom Computing are developing a first-generation device with 1,200 physical qubits, with plans to upgrade to 10,000 qubits, which would enable experiments with hundreds of logical qubits.