Quantum State Tomography of a Fiber-Based Source of Polarization-Entangled Photon Pairs

Abstract

We report an experimental demonstration of a bright high fidelity single-mode-optical-fiber source of polarization-entangled photon pairs. The source takes advantage of single-mode fiber optics, highly nonlinear microstructure fiber, judicious phase-matching, and the inherent stability provided by a Sagnac interferometer. With a modest average pump power (300 rW), we create all four Bell states with a detected two-photon coincidence rate of 7 kHz per bandwidth of 0.9 nm, in a spectral range of more than 20 nm. To characterize the purity of the states produced by this source, we use quantum-state tomography to reconstruct the corresponding density matrices, with fidelities of 95 % or more for each Bell state,.

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Document Details

Document Type
Technical Report
Publication Date
Dec 20, 2007
Accession Number
ADA499176

Entities

People

  • A. Migdall
  • Jialu Fan
  • M. D. Eisaman

Organizations

  • National Institute of Standards and Technology

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Fiber Optics
  • Fibers
  • Information Processing
  • Information Science
  • Information Systems
  • Microstructure
  • Optical Fibers
  • Optics
  • Quantum Computing
  • Quantum Information
  • Quantum Information Science
  • Quantum Mechanics
  • Quantum States
  • Quantum Tomography
  • Wave Mixing
  • Waveplates

Fields of Study

  • Physics

Readers

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

Technology Areas

  • Quantum Computing