Open AccessAll-order dispersion cancellation and energy-time entangled state
Author(s) -
Jinsoo Ryu,
Ki-Young Cho,
Cheol Oh,
Hyon Chol Kang
Publication year - 2017
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.001360
Subject(s) - dispersion (optics) , physics , photon , spontaneous parametric down conversion , optics , quantum mechanics , polarization mode dispersion , photon entanglement , order (exchange) , modal dispersion , quantum entanglement , optical fiber , quantum , dispersion shifted fiber , fiber optic sensor , finance , economics
Dispersion cancellation with an energy-time entangled photon pair in Hong-Ou-Mandel (HOM) interference is one phenomenon that reveals the nonclassical nature of the entangled photon pair. This phenomenon has been observed in materials with very weak dispersions. If the higher-order dispersion coefficient is non-negligible, then the experiment must be modified to realize dispersion cancellation. All-order dispersion cancellation using balanced dispersion was suggested by Steinberg. However, the same phenomenon is expected to occur even if a photon pair is not entangled. This behaviour can be explained by path indistinguishability with identical dispersion. To achieve an all-order dispersion experiment that cannot be explained classically, we modified the experiment and performed another all-order dispersion cancellation experiment that cannot be explained by identical dispersion. This is the first demonstration of nonclassical all-order dispersion cancellation.