Hybrid Integrated Photonic/Electronic Homodyne Detector for GHz Baud Rate Continuous Variable Quantum Key Distribution

Andriy Boubriak, Rupesh Kumar, Jonathan Frazer, Jonathan Matthews, Euan Allen

Research output: Chapter or section in a book/report/conference proceedingChapter in a published conference proceeding

Abstract

Implementing CVQKD using integrated photonics presents many advantages, such as small form factor, and the ability to mass manufacture at a high volume with a lost cost, by making use of mature electronics manufacturing technologies. Another significant advantage of using integrated photonics is for implementing CV-QKD receivers. By making use of integrated photodiodes with integrated amplification electronics it is possible to achieve high-performance wideband (GHz) homodyne detectors [1], using standard telecoms electronics at negligible cost ($10s). Increasing the detector bandwidths allows for faster baud rates, and therefore faster key rates [2]. In this work we implement a hybrid integrated photonic/electronic circuit design to demonstrate an integrated photonic CV-QKD receiver with a bandwidth of approximately 1.4GHz and our work towards making use of the design to implement a CV-QKD system with GHz baud rates. This represents an improvement in bandwidth of 2 orders of magnitude over previous chip-based CV-QKD experiments where the bandwidth of the detector was 10MHz. [2].

Original languageEnglish
Title of host publication2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023
PublisherIEEE
ISBN (Electronic)9798350345995
DOIs
Publication statusPublished - 4 Sept 2023
Event2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023 - Munich, Germany
Duration: 26 Jun 202330 Jun 2023

Publication series

Name2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023

Conference

Conference2023 Conference on Lasers and Electro-Optics Europe and European Quantum Electronics Conference, CLEO/Europe-EQEC 2023
Country/TerritoryGermany
CityMunich
Period26/06/2330/06/23

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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