Infleqtion, in collaboration with JPMorgan Chase, has released an open-source quantum software library designed to accelerate research into more efficient quantum error correction methods. The library, called qLDPC, implements advanced fault-tolerant coding schemes that can potentially reduce the number of physical qubits needed per logical qubit by a factor of 10 to 100, depending on the code. This breakthrough addresses one of the most persistent bottlenecks in quantum computing—excessive qubit overhead for achieving error tolerance.
The qLDPC library supports error correction schemes particularly well suited to Infleqtion’s neutral atom-based quantum computing hardware, which offers programmable qubit layouts. This hardware-software co-design approach enables more efficient placement of qubits to support low-density parity check (LDPC) codes, a class of error-correcting codes that can be highly space-efficient. As a result, the new approach could reduce the typical requirement of ~1,500 physical qubits per logical qubit to as few as 15–150.
The library is publicly available via GitHub to promote collaboration across the quantum community and to enable developers and researchers to adapt the tools for their own platforms. This effort builds on Infleqtion’s ongoing UK-based initiatives at the National Quantum Computing Centre (NQCC) and reflects the company’s commitment to scalable, cross-platform quantum development.
The qLDPC library is available here. Full announcement details can be found here.
May 12, 2025
