Integrated quantum technology

In our research we aim at developing integrated quantum technology for single-photons on silicon chips. We design, fabricate and characterize photonic integrated circuit devices using advanced nanotechnology that allows for straightforward replication of functional units. Our activities focus on three core constituents of chip-scale quantum optics:

  • Design of efficient interfaces between optical waveguides and single-photon sources.
  • Development of nanophotonic devices and quantum circuit components.
  • Integration of superconducting nanowire single-photon detectors with nanophotonic waveguides.

Combining all three of these research directions leads to scalable quantum technology with tremendous benefits over classical computation, communication and sensing systems.

In our SoN laboratory we are further pursuing the experimental realization of a multi-channel receiver unit for ultra-fast quantum key distribution that is based on our waveguide- and detector technology. The project, QuPAD, is funded by the German Ministry for Science and Education (BMBF).

For more details, please see our group website: Integrated Quantum Technology

Silicon chip integrating quantum light sources, nanophotonic circuit components and superconducting nanowire single-photon detectors for applications in quantum technology
© C. Schuck

Relevant preliminary work:

  1. Optimal photonic crystal cavities for coupling nanoemitters to photonic integrated circuits
    Olthaus J, Schrinner P P J, Reiter D E, Schuck C. Advanced Quantum Technologies, 1900084 (2019)
  2. Waveguide-integrated superconducting nanowire single-photon detectors
    Ferrari S, Schuck C, Pernice W. Nanophotonics, 7(11), 1725-1758 (2018)
  3.  Parametric down-conversion photon-pair source on a nanophotonic chip
    Guo X, Zou C, Schuck C, Jung H, Cheng R, Tang H X. Light: Science & Applications 6, e16249 (2017)
  4.  Quantum interference in heterogeneously integrated superconducting-photonic circuits on a silicon chip
    Schuck C, Guo X, Fan L, Ma X, Poot M, H. Tang H X. Nature Communications 7, 10352 (2016)