Limitations on building single-photon-resolution detection devices

Nanophotonic technologies for single-photon devices

1CNR− Istituto di Fotonica e Nanotecnologie, Via Cineto Romano 42, 00156 Rome, Italy 2COBRA Research Institute, Eindhoven University of Technology, PO Box 513, 5600MB Eindhoven, The Netherlands 3Institute of Photonics and Quantum Electronics, Ecole Polytechnique Fédérale de Lausanne (EPFL), CH−1015 Lausanne, Switzerland 4Institut des Nanotechnologies de Lyon, Université de Lyon, CNRS UMR5270, I...

Approaches to Single Photon Detection

We present recent results on our development of single photon detectors, including: gated and free-running InGaAs/InP avalanche photodiodes; hybrid detection systems based on sum-frequency generation and Si APDs; and SSPDs (superconducting single photon detectors), for telecom wavelengths; as well as SiPM (Silicon photomultiplier) detectors operating in the visible regime.

Near-Infrared Single-Photon Detection

Infrared single-photon detection by two-photon absorption in silicon

We propose a scheme for infrared single-photon detection based on two-photon absorption at room temperature in Si avalanche photodiodes, where the detected photon’s energy is lower than the band gap and the energy difference is complemented by a pump field. A quantum nonperturbative model is developed for nondegenerate two-photon absorption in direct and indirect semiconductors yielding proper ...

Building Detection from High Resolution Colour

We describe a new method for the detection and reconstruction of building in dense urban areas using high resolution aerial images. Our approach begins with the generation of a dense digital elevation model (DEM). A sparse disparity map is densiied using a region-based segmentation of the left aerial image: each detected region is tested to be planar in the disparity map. A strategy is proposed...