Mainz 2017 – scientific programme

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Q: Fachverband Quantenoptik und Photonik

Q 53: Poster: Quantum Optics and Photonics III

Q 53.82: Poster

Thursday, March 9, 2017, 17:00–19:00, P OG2

Entangled photons triplets, produced via third order parametric down conversion in bulk materials — Cameron Okoth¹, •Andrea Cavanna¹, and Maria Chekhova^1,2 — ¹Max-Planck- Institute for the Science of Light, Staudtstr. 2, 91058 Erlangen, Germany — ²Faculty of Physics, M. V. Lomonosov Moscow State University, 119991 Moscow, Russia

Parametric down conversion (PDC) is a highly developed research field and is now commonly used in several areas of optics. Despite this PDC has only been observed when one considers the second order susceptibility term. We intend to experimentally observe seeded generation of triple photons, where the seed is collinear with the pump. In this way the entire process is can be thought as analogous to standard PDC but with the efficiency changed by a factor of χ⁽²⁾/(χ⁽³⁾E_seed) , where E_seed is the seed field. Many of the recent attempts to observe triplet photons have been fiber based. Although fibers have some advantages over bulk materials, there are still many reasons to include crystals as promising candidates in which to generate triplet photons: high effective cubic susceptibility, no lowered efficiency due to modal overlap and tunable phase matching to name but a few. In our work we concentrate on calcite but can be readily extended to rutile, KTP etc.