Entangled photon generation in two-period quasi-phase-matched parametric down-conversion | Zendy

Wakana Ueno | Zendy; Fumihiro Kaneda | Zendy; Hirofumi Suzuki | Zendy; Shigehiro Nagano | Zendy; Atsushi Syouji | Zendy; Ryōsuke Shimizu | Zendy; Koji Suizu | Zendy; Keiichi Edamatsu | Zendy

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Entangled photon generation in two-period quasi-phase-matched parametric down-conversion

Author(s) -

Wakana Ueno,

Fumihiro Kaneda,

Hirofumi Suzuki,

Shigehiro Nagano,

Atsushi Syouji,

Ryōsuke Shimizu,

Koji Suizu,

Keiichi Edamatsu

Publication year - 2012

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.20.005508

Subject(s) - spontaneous parametric down conversion , optics , photon , polarization (electrochemistry) , parametric statistics , quantum optics , physics , photon entanglement , wavelength , poling , nonlinear optics , phase (matter) , photon polarization , optoelectronics , quantum entanglement , quantum , laser , quantum mechanics , chemistry , statistics , mathematics , dielectric , ferroelectricity

We proposed and demonstrated a simple but deterministic scheme for generating polarization-entangled photon pairs at telecommunication wavelengths with type-II quasi-phase-matched spontaneous parametric down-conversion (QPM-SPDC) having two poling periods. We fabricated a LiNbO3 crystal having two poling periods so as to generate entangled photons at two wavelengths, i.e., 1506 nm and 1594 nm. We characterized the two-photon polarization state with state tomography and confirmed that the state was highly entangled.

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