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<p>The Fedorov parameter, which is the operational measure of entanglement of a two-component quantum system, has been experimentally measured. The influence of the degree of noncollinearity of the source of entangled photon pairs on this parameter, which can vary widely depending on the experimental conditions, has been examined. The results are in complete agreement with the previously proposed analytical estimate.</p>

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Anisotropy of Two-Photon Entanglement: An Operational Assessment

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年4月1日

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  • S. P. Kulik,
  • D. A. Kuts,
  • S. A. Podoshvedov,
  • Yu. N. Stolyarov,
  • V. L. Ushakov,
  • M. V. Fedorov

摘要

The Fedorov parameter, which is the operational measure of entanglement of a two-component quantum system, has been experimentally measured. The influence of the degree of noncollinearity of the source of entangled photon pairs on this parameter, which can vary widely depending on the experimental conditions, has been examined. The results are in complete agreement with the previously proposed analytical estimate.