  Photons have been identified early on as a very good candidate for quantum
technologies applications, as carriers of quantum information, either by
polarization encoding, time encoding or spatial encoding. Quantum cryptography,
quantum communications, quantum networks and quantum computing are some of the
applications targeted by the so called quantum photonics. Nevertheless, it was
also clear at an early stage that bulk optics for handling quantum states of
light would not be the best option for these technologies. More recently,
single photons, entangled photons and quantum light in general have been
coupled to integrated approaches coming from classical optics in order to meet
the requirements of scalability, reliability and efficiency for quantum
technologies. In this article, we describe our recent advances using elongated
optical nano-fibers. We also present our latest results on nanocrystals made of
perovskites and discuss some of their quantum properties. Finally, we will
discuss the general steps necessary in order to couple these nanoemitters
efficiently with our photonic platform, based on tapered optical nanofibers.
