Polarization-Entangled Photon-Pair Source in the Near-NIR for Free-Space QKD

Abstract

This grant has enabled the development of a new optical design for producing polarization-entangled photon-pairs. This design, based on Type-1 critical phase-matching, utilizes two optical nonlinear crystals aligned with parallel optical axes. The objective of the grant is to support on-going research at the Centre for Quantum Technologies, which seeks to develop entanglement-based QKD. Entanglement based QKD is the most secure form of QKD as the presence of an eavesdropper is revealed by a violation of fundamental quantum correlations. Furthermore, entanglement is a resource for entropy, negating the need for a trusted random number generator. Specific objectives in this grant were to study how polarization-entangled photon-pairs could be generated in a compact manner to minimize Size, Weight and Power (SWAP) requirements on mobile platforms, such as small drones or CubeSats.

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Document Details

Document Type
Technical Report
Publication Date
May 02, 2018
Accession Number
AD1054854

Entities

People

  • Alexander Ling

Organizations

  • National University of Singapore

Tags

Communities of Interest

  • Air Platforms
  • Autonomy
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Force
  • Air Force Research Laboratories
  • Crystals
  • Department Of Defense
  • Detectors
  • Lasers
  • Materials
  • Military Research
  • Optical Materials
  • Photons
  • Polarization
  • Quantum Key Distribution
  • Quantum States
  • Random Number Generators
  • Reliability
  • Singapore
  • Waveplates

Fields of Study

  • Physics

Readers

  • Cybersecurity.
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.

Technology Areas

  • Autonomy
  • Autonomy - Autonomous System Control
  • Quantum Computing
  • Quantum Science - Quantum Key Distribution
  • Space