DOE-funded researchers at Northeastern University develop qLDPC codes designed for modular quantum architectures, using hierarchical correction combining fast local operations with slower global error correction to improve stability and scalability.

DOE-funded researchers at Northeastern University develop qLDPC codes designed for modular quantum architectures, using hierarchical correction combining fast local operations with slower global error correction to improve stability and scalability.
Recovery Algorithm for Correlated Errors in Permutation-Invariant Quantum Codes
Quantum Error Recovery (QER) uses knowledge of the error channel acting on a quantum system to find optimal recovery maps.
CWI researcher Jonas Helsen awarded €1.5M ERC Starting Grant to develop methods for analyzing and certifying fault-tolerant quantum computers, addressing critical error challenges.
Novel purification schemes for photonic graph states improve fidelity from ~0.86 to ~0.988 using only linear optics and photon detectors—enabling scalable photonic quantum computing with quantum emitters.
Provides complete characterization of optimal fusion strategies for single-qubit stabilizer codes. Proves perfect strategies are generic for random graph codes, advancing efficient quantum error correction in photonic systems.