Heisenberg limited Sagnac interferometry. Academic Article uri icon


  • We show how the entangled photons produced in parametric down conversion can be used to improve the sensitivity of a Sagnac interferometer. Two-photon and four-photon coincidences increases the sensitivity by a factor of two and four respectively. Our results apply to sources with arbitrary pumping and squeezing parameters.

published proceedings

  • Opt Express

citation count

  • 19

complete list of authors

  • Kolkiran, Aziz||Agarwal, GS

publication date

  • January 2007