2005/01/01 by Z. L. Yuan, Zhiliang Yuan, A. J. Shields · 1 citation
Computer Science · Physics and Astronomy · #Computer science #Duty cycle #Interferometry #Key (lock) #Optics #Photon #Photon polarization #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum channel #Quantum cryptography #Quantum entanglement #Quantum information #Quantum information science #Quantum key distribution #Quantum mechanics #Quantum optics #Telecommunications #quant-ph
paper · pdf · doi:10.1364/opex.13.000660
published as Optics Express 13, 660-665(2005) · 4 pages, 4 figures
openalex publication_date 2005/01/01 · arxiv created 2005/02/15 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We demonstrate a robust, compact and automated quantum key distribution system, based upon a one-way Mach-Zender interferometer, which is actively compensated for temporal drifts in the photon phase and polarization. The system gives a superior performance to passive compensation schemes with an average quantum bit error rate of 0.87% and a duty cycle of 99.6% for a continuous quantum key distribution session of 19 hours over a 20.3km installed telecom fibre. The results suggest that actively compensated QKD systems are suitable for practical applications.