Research paperExperimental CharacterizationTheoreticalTime-Bin BB₈₄ QKD System Using Indium Phosphide and Silicon Nitride Photonic Integrated CircuitsDenis Fatkhiev, Alexander Grebenchukov, João dos Reis Frazão, Gleb Nazarikov et al.arXiv·2026·10.48550/arXiv.2602.17227·arXiv:2606.21308AbstractWe demonstrate a dual-chip InP-SiN photonic QKD system with on-chip pulse generation and reconfigurable decoding, implementing time-bin BB₈₄ with finite-key security against coherent attacks. The system sustains a QBER below 4 % and delivers secret keys at kbps rates over 150–250 km of fiber.Read more
Alice transmitter photonic integrated circuit on InP, containing a gain-switched DFB laser, VOA, and MZM for time-bin pulse generation.1 characterization1 figureExperimentalInPStudied MaterialExpand
Bob receiver photonic integrated circuit on silicon nitride, containing tunable couplers and an AMZI for reconfigurable decoding.1 characterization1 figureExperimentalSi₃N₄Studied MaterialExpand
Dual-chip QKD system comprising the InP transmitter, SiN receiver, and a spooled standard single-mode fiber link.4 propertiesExperimentalInPStudied MaterialSi₃N₄Studied Materialstandard single-mode fiberReference MaterialExpand
Research paperExperimental CharacterizationTheoreticalTime-Bin BB₈₄ QKD System Using Indium Phosphide and Silicon Nitride Photonic Integrated CircuitsDenis Fatkhiev, Alexander Grebenchukov, João dos Reis Frazão, Gleb Nazarikov et al.arXiv·2026·10.48550/arXiv.2602.17227·arXiv:2606.21308AbstractWe demonstrate a dual-chip InP-SiN photonic QKD system with on-chip pulse generation and reconfigurable decoding, implementing time-bin BB₈₄ with finite-key security against coherent attacks. The system sustains a QBER below 4 % and delivers secret keys at kbps rates over 150–250 km of fiber.Read more
Alice transmitter photonic integrated circuit on InP, containing a gain-switched DFB laser, VOA, and MZM for time-bin pulse generation.1 characterization1 figureExperimentalInPStudied MaterialExpand
Bob receiver photonic integrated circuit on silicon nitride, containing tunable couplers and an AMZI for reconfigurable decoding.1 characterization1 figureExperimentalSi₃N₄Studied MaterialExpand
Dual-chip QKD system comprising the InP transmitter, SiN receiver, and a spooled standard single-mode fiber link.4 propertiesExperimentalInPStudied MaterialSi₃N₄Studied Materialstandard single-mode fiberReference MaterialExpand
Research paperExperimental CharacterizationTheoreticalTime-Bin BB₈₄ QKD System Using Indium Phosphide and Silicon Nitride Photonic Integrated CircuitsDenis Fatkhiev, Alexander Grebenchukov, João dos Reis Frazão, Gleb Nazarikov et al.arXiv·2026·10.48550/arXiv.2602.17227·arXiv:2606.21308AbstractWe demonstrate a dual-chip InP-SiN photonic QKD system with on-chip pulse generation and reconfigurable decoding, implementing time-bin BB₈₄ with finite-key security against coherent attacks. The system sustains a QBER below 4 % and delivers secret keys at kbps rates over 150–250 km of fiber.Read more
Alice transmitter photonic integrated circuit on InP, containing a gain-switched DFB laser, VOA, and MZM for time-bin pulse generation.1 characterization1 figureExperimentalInPStudied MaterialExpand
Bob receiver photonic integrated circuit on silicon nitride, containing tunable couplers and an AMZI for reconfigurable decoding.1 characterization1 figureExperimentalSi₃N₄Studied MaterialExpand
Dual-chip QKD system comprising the InP transmitter, SiN receiver, and a spooled standard single-mode fiber link.4 propertiesExperimentalInPStudied MaterialSi₃N₄Studied Materialstandard single-mode fiberReference MaterialExpand
Research paperExperimental CharacterizationTheoreticalTime-Bin BB₈₄ QKD System Using Indium Phosphide and Silicon Nitride Photonic Integrated CircuitsDenis Fatkhiev, Alexander Grebenchukov, João dos Reis Frazão, Gleb Nazarikov et al.arXiv·2026·10.48550/arXiv.2602.17227·arXiv:2606.21308AbstractWe demonstrate a dual-chip InP-SiN photonic QKD system with on-chip pulse generation and reconfigurable decoding, implementing time-bin BB₈₄ with finite-key security against coherent attacks. The system sustains a QBER below 4 % and delivers secret keys at kbps rates over 150–250 km of fiber.Read more
Alice transmitter photonic integrated circuit on InP, containing a gain-switched DFB laser, VOA, and MZM for time-bin pulse generation.1 characterization1 figureExperimentalInPStudied MaterialExpand
Bob receiver photonic integrated circuit on silicon nitride, containing tunable couplers and an AMZI for reconfigurable decoding.1 characterization1 figureExperimentalSi₃N₄Studied MaterialExpand
Dual-chip QKD system comprising the InP transmitter, SiN receiver, and a spooled standard single-mode fiber link.4 propertiesExperimentalInPStudied MaterialSi₃N₄Studied Materialstandard single-mode fiberReference MaterialExpand