Benjamin Griffiths

Real-time adaptive estimation of decoherence timescales for a single qubit

2022 · arXiv (Cornell University)

Characterising the time over which quantum coherence survives is critical for any implementation of quantum bits, memories and sensors. The usual method for determining a quantum system's decoherence rate involves a suite of experiments probing …

Wavelength-versatile quantum key distribution for reconfigurable classical-quantum networks

2024

We report a high-speed GHz-clocked quantum key distribution (QKD) system, tunable over 65 nm using a novel injection-locked laser design. This paves the way to automatic optimsation of quantum channels in hybrid classical-quantum networks.