Accession Number:

ADA499176

Title:

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

Descriptive Note:

Journal article

Corporate Author:

NATIONAL INST OF STANDARDS AND TECHNOLOGY GAITHERSBURG MD

Personal Author(s):

Report Date:

2007-12-20

Pagination or Media Count:

7.0

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,.

Subject Categories:

  • Nuclear Physics and Elementary Particle Physics
  • Quantum Theory and Relativity

Distribution Statement:

APPROVED FOR PUBLIC RELEASE