SANDiE Partner P11

CNRS, Laboratoire de Photonique et de Nanostructures, Marcoussis, France

The laboratory for Photonics and Nanostructures was created five years ago from the merger of CNRS-L2M and France Telecom Cent Bagneux laboratories. Both laboratories have conducted research at very high international level, in particular in the field of III-V self-assembled nanostructures (such as the discovery of self-assembled InAs/GaAs quantum dots in 1985).

LPN is a node of the National Network of Nanotechnology Facilities composed of laboratories with very high-technology facilities. LPN hosts a 1000 m2 clean-room with state-of-the-art equipments for semiconductor growth (4 MBE and 1 MOCVD reactors) and processing (e-beam and UV lithography, reactive ion etching, focused ion beam, metal and dielectric deposition...) on which SANDiE network may rely for the achievement of the joint program of activities. In a close link, an ensemble of high-resolution structural analysis tools is available (electron microscope, STM). The laboratory is also very active in the field of photonics, in non-linear and quantum optics.

The LPN is strongly involved in the physics of self-assembled nanostructures (SAN), which is the reason why LPN contribution to SANDiE network is large. More precisely, our activities related to SAN are:

  • Fabricating SAN by means of epitaxial growth (InAs/GaAs quantum dots and III-V nanowhiskers). This activity is obviously essential to the study of SAN, and therefore several SANDIE partners benefit of samples from our laboratory.
  • Analyzing their structural properties, using very high-resolution microscopes (Transmission electron and scanning tunneling microscopes). This information is crucial to understand their electronical and optical properties. This work strongly relies on our modeling activity to extract the structural parameters, as the strain distribution.
  • Studying their interaction with light. At LPN, we are able to optically address a single SAN, giving a unique opportunity to manipulate the quantum state of a quantum object.
  • Designing and fabricating novel sources based on SAN for future applications, such as laser sources for optical fiber telecommunications or single photon sources for quantum cryptography and quantum information.

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last update: 28 February 2019, A. Weber