Heisenberg limited Sagnac interferometry

Details Heisenberg limited Sagnac interferometry Heisenberg limited Sagnac interferometry

2007-05-17

arxiv.org/abs/0705.2468v1

Optics Express 15, 6798 (2007)

Physics

Quantum Physics

11 pages, 5 figures

Scientific paper

10.1364/OE.15.006798

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.

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