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EACON 2020

EurAsian Conference on Nanophotonics

April 6 – 9, 2020 / Jena, Germany


Frank Setzpfandt

Institute of Applied Physics Jena, Germany
Abbe Center of Photonics, Jena, Germany
Friedrich-Schiller-Universität Jena, Germany

Nonlinear frequency conversion in nanostructured optical systems for application in quantum photonics

Photon pairs, quantum states of light comprising exactly two photons, are an important resource for many promising applications in quantum optics, e.g. in quantum communication, quantum computing, or quantum sensing. Photon pairs can be generated by spontaneous nonlinear processes, where photons of a classical pump laser are split into entangled pairs due to the perturbation created by a second- or third-order optical nonlinearity. The properties of the thus created photon pairs, like spectrum, polarization, and spatial distribution, depend to a large extent on the modal properties of the optical system that is used for photon-pair generation. Nanostructuring enables control of the properties of nonlinear optical systems far beyond what is available in naturally occurring nonlinear crystals. Hence, nonlinear nanostructured optical systems provide many opportunities for advanced tailoring of photon pairs for quantum applications. I will discuss our efforts towards the design and realization of nanostructured photo-pair sources in waveguides and resonant surfaces as well as potential applications in quantum imaging and spectroscopy.

Figure 1. Sketch of a photonic crystal waveguide for photon-pair generation where the signal and
idler photons of the photon pair propagate in opposite directions.


  1. S. Saravi, T. Pertsch, and F. Setzpfandt, “Photonic crystal waveguides as sources of counterpropagating
    factorizable biphoton states,” Opt. Lett. 44, 69 (2019)
  2. S. Saravi, T. Pertsch, and F. Setzpfandt, “Generation of Counterpropagating Path-Entangled Photon Pairs
    in a Single Periodic Waveguide,” Phys. Rev. Lett. 18, 183603 (2017)
  3. S. Saravi, A. N. Poddubny, T. Pertsch, F. Setzpfandt, and A. A. Sukhorukov, “Atom mediated spontaneous
    parametric down-conversion in periodic waveguides,” Opt. Lett. 42, 4724 (2017)
  4. F. Löchner, A. Fedotova, S. Liu, G. Keeler, G. Peake, S. Saravi, M. Shcherbakov, S. Burger, A. Fedyanin, I.
    Brener, T. Pertsch, F. Setzpfandt, and I. Staude, “Polarization-Dependent Second Harmonic Diffraction
    from Resonant GaAs Metasurfaces,” ACS Photonics 5, 1786 (2018)

Further Talks

Andrea Csáki

Microfludic Synthesis of plasmonic Nanoparticles for Sensing Applications

Andrey Turchanin

Controlled growth of transition metal dichalcogenide monolayers for applications in nanoelectronic and nanophotonic devices

Chi Chen

Near Field Spectroscopic Imaging: from Hard to Soft Materials

Chi-How Peng

Cobalt mediated controlled/living radical polymerization: from mechanism understanding to materials application

Chun-Hong Kuo

Bridging Energy and Chemistry via Nanoarchitectonic Engineering at Atomic Scale

Falk Eilenberger

Integration of two-dimensional materials in optical systems for nonlinear optics, sensing, and single photon sources

Frank Setzpfandt

Nonlinear frequency conversion in nanostructured optical systems for application in quantum photonics

Heng-Liang Wu

Controlling the Oxidation State of Cu Electrode and Reaction Intermediates for Electrochemical CO2 Reduction to Ethylene

Kien-Voon Kong

Direct Observation of Reaction Intermediates of Metal-based Therapeutic Agents in Single Living Cell Using TERS

Maria Wächtler

Quantum confined semiconductor nanostructures in light-driven catalysis

Martin Presselt

Supramolecular Control of Optical and Electronical Properties of Two-Dimensional Dye Layers

Po-Chiao Lin

New Environment Sensitive Fluorophores with Color-Tailored Emission: In Vivo Monitoring of Carbonic Anhydrases Expression on Growth of Larval Zebrafish

Shangjr (Felix) Gwo

Plasmonic Metasurface-Enhanced Linear and Nonlinear Processes in Two-Dimensional Semiconductors

Ta-Jen Yen

Empowering Bilayer MoS2 by Engineered Plasmonic Nanostructures for Optoelectronic Applications

Tiow-Gan Ong

Carbodicarbene, Carbogenic Maverick, Not a Moderate!

Volker Deckert

Plasmon Enhanced Probe Spectroscopies – Structural Investigation of Nanoscale Objects

Yi-Tsu Chan

Molecular self-assembly methodology for rational construction of metallosupramolecules with high structural complexity

Yian Tai

Toward a universal polymeric material for electrode buffer layers in organic optoelectronics

Yu-Jung Lu

Controlling Light-matter Interactions at Nanoscale with Plasmonics: From Spontaneous Emission to Lasing