Author(s): You, Jin; Wang, Yue; An, Jun-Ming

Source: CHINESE PHYSICS B Volume: 30 Issue: 8 Article Number: 80302 DOI: 10.1088/1674-1056/abe2ff Published: JUL 2021

Abstract: Silica-based planar lightwave circuit (PLC) devices can reduce transmission loss and cost in a quantum key distribution (QKD) system, and have potential applications in integration and production. A PLC-based quantum decoding integrated chip for multi-protocols is designed and fabricated, which is composed of variable optical splitters (VOSs), asymmetric Mach-Zehnder interferometers (AMZIs), and variable directional couplers (VDCs). Balanced pulse-pairs of four outputs are obtained simultaneously with measured delay times of 405 ps and 402 ps, respectively. The chip has advantages in achieving high interference visibility and low quantum bit error rate (QBER).

Accession Number: WOS:000679101700001

ISSN: 1674-1056

eISSN: 2058-3834

Full Text: https://iopscience.iop.org/article/10.1088/1674-1056/abe2ff