Quantum decoding integrated chip for quantum key distribution based on silica planar lightwave circuit technology

Jin You; Yue Wang; Dan Wu; Junming An

doi:10.1117/12.2584359

4 December 2020 Quantum decoding integrated chip for quantum key distribution based on silica planar lightwave circuit technology

Jin You, Yue Wang, Dan Wu, Junming An

Author Affiliations +

Proceedings Volume 11617, International Conference on Optoelectronic and Microelectronic Technology and Application; 1161708 (2020) https://doi.org/10.1117/12.2584359
Event: International Conference on Optoelectronic and Microelectronic Technology and Application, 2020, Nanjing, China

Abstract

Silica-based planar lightwave circuit (PLC) devices can offer great potential for quantum key distribution (QKD) with the benefits of low-loss, low-cost, large-scale integration, miniaturization, stability and mass production. A quantum decoding integrated chip for QKD based on silica PLC technology was demonstrated, which consists of a variable optical splitter (VOS), an asymmetric Mach–Zehnder interferometer (AMZI) with a thermo-optic phase modulator (TOPM) and a delay line (DL) whose delay time is 400ps, and a variable directional coupler (VDC). The balanced pulsepairs of double channels with measured delay times of 396ps and 398ps respectively were obtained in the conditions of both classical optics and single-photon transmissions. The chip has advantageous to achieve high interference visibilities of double channels simultaneously for BB84 phase and time-bin protocols.

Citation Download Citation

Jin You, Yue Wang, Dan Wu, and Junming An "Quantum decoding integrated chip for quantum key distribution based on silica planar lightwave circuit technology", Proc. SPIE 11617, International Conference on Optoelectronic and Microelectronic Technology and Application, 1161708 (4 December 2020); https://doi.org/10.1117/12.2584359

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