Long-distance Quantum Key Distribution Supported by a PIC-based Interferometer.
Optical Fiber Communications Conference and Exhibition（2024）
Abstract
We demonstrate QKD with efficient-BB84 protocol employing a photonic integrated Mach-Zehnder interferometer in the receiver. Our solution outperforms fiber-based devices, covering a 45 dB link and achieving a 220% higher key rate at 10 dB.
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Key words
Quantum Key Distribution,Mach-Zehnder Interferometer,Key Rate,Low Loss,Arrival Time,Beam Splitter,Quantum State,Secret Key,Wavelength Division Multiplexing,Time-to-digital Converter
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