Highly efficient source for frequency-entangled photon pairs generated in a 3rd order periodically poled MgO-doped stoichiometric LiTaO3 crystal

Heonoh Kim; Hee Jung Lee; Sang Min Lee; Han Seb Moon

doi:10.1364/OL.40.003061

Highly efficient source for frequency-entangled photon pairs generated in a 3rd order periodically poled MgO-doped stoichiometric LiTaO3 crystal

Quantum Physics 2023-07-19 v1 Optics

Authors: Heonoh Kim , Hee Jung Lee , Sang Min Lee , Han Seb Moon

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Abstract

We present a highly efficient source for discrete frequency-entangled photon pairs based on spontaneous parametric down-conversion using 3rd order type-0 quasi-phase matching in a periodically poled MgO-doped stoichiometric LiTaO3 crystal pumped by a 355.66 nm laser. Correlated two-photon states were generated with automatic conservation of energy and momentum in two given spatial modes. These states have a wide spectral range, even under small variations in crystal temperature, which consequently results in higher discreteness. Frequency entanglement was confirmed by measuring two-photon quantum interference fringes without any spectral filtering.

Keywords

frequency-entangled photon pairs spontaneous parametric down-conversion periodically poled MgO-doped LiTaO3 quasi-phase matching two-photon quantum interference discrete frequency entanglement

Cite

@article{arxiv.1506.04358,
  title  = {Highly efficient source for frequency-entangled photon pairs generated in a 3rd order periodically poled MgO-doped stoichiometric LiTaO3 crystal},
  author = {Heonoh Kim and Hee Jung Lee and Sang Min Lee and Han Seb Moon},
  journal= {arXiv preprint arXiv:1506.04358},
  year   = {2023}
}

Comments

4 pages, 4 figures, to be published in Optics Letters

Highly efficient source for frequency-entangled photon pairs generated in a 3rd order periodically poled MgO-doped stoichiometric LiTaO3 crystal

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