Nature Communications (Jun 2016)

Loss-tolerant state engineering for quantum-enhanced metrology via the reverse Hong–Ou–Mandel effect

  • Alexander E. Ulanov,
  • Ilya A. Fedorov,
  • Demid Sychev,
  • Philippe Grangier,
  • A. I. Lvovsky

DOI
https://doi.org/10.1038/ncomms11925
Journal volume & issue
Vol. 7, no. 1
pp. 1 – 6

Abstract

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N00N states are promising for quantum communications and metrology, but are vulnerable to losses. Here the authors develop a technique for preparing high-fidelity two-photon N00N states in a loss-free fashion, and demonstrate enhanced phase sensitivity without requiring recombination.