Continuous-variable quantum repeaters based on bosonic error-correction and teleportation: Architecture and applications

Research output: Contribution to journalArticlepeer-review

Abstract

Quantum repeater is an essential ingredient for quantum networks that link distant quantum modules such as quantum computers and sensors. Motivated by distributed quantum computing and communication, quantum repeaters that relay discrete-variable quantum information have been extensively studied; while continuous-variable (CV) quantum information underpins a variety of quantum sensing and communication application, a quantum-repeater architecture for genuine CV quantum information remains largely unexplored. This paper reports a CV quantum-repeater architecture based on CV quantum teleportation assisted by the Gottesman-Kitaev-Preskill code to significantly suppress the physical noise. The designed CV quantum-repeater architecture is shown to significantly improve the performance of entanglement-assisted communication, target detection based on quantum illumination and CV quantum key distribution, as three representative use cases for quantum communication and sensing.

Original languageEnglish (US)
Article number025018
JournalQuantum Science and Technology
Volume7
Issue number2
DOIs
StatePublished - Apr 2022

Keywords

  • entanglement distribution
  • Gottesman-Kitaev-Perskill state
  • quantum error corrections
  • quantum information
  • quantum photonics
  • quantum repeaters
  • teleportation

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science (miscellaneous)
  • Physics and Astronomy (miscellaneous)
  • Electrical and Electronic Engineering

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