Inorganic PERovskite NANOcrystals for NANOphotonics – IPER-Nano2
Quantum electrodynamics is a major research topic in modern Physics dealing with the coupling of a single emitter to a mode of the electromagnetic field. Today, it is possible to build experimentally a system where the fundamental properties of a single emitter can be tuned by the coupling to its electromagnetic environment. Various emitters have been studied from individual atoms or ions to solid-state systems such as epitaxial quantum dots or semiconductor nanocrystals (NCs). Applications range from secure quantum communication and random number generation to biological imaging. Fundamental tests of quantum theory are also of concern, with the possibility to study strong light-matter interaction.
In this contex IPER-Nano2 has two main objectives:
(i) to investigate the optical and electronic properties of new solid-state quantum emitters, the all-inorganic perovskite nanocrystals (p-NC). The substitution of halogen atom and the variation of the confinement (ie, the size) allow tuning the emission wavelength from the ultraviolet to near-infrared. The bright room temperature luminescence with reduced blinking and high efficiency up to 90% without surface shelling make these systems very promising for nanophotonics.
(ii) to couple single p-NCs to original nanophotonics devices (tapered optical nanofibers, Bragg-grating nanofibers, or fibered microcavities) in order to enhance, redirect and engineer their emission. The long-term perspectives are: to obtain an efficient single photon source based on p-NCs integrated in innovate photonics structures which could ultimately operate at room temperature; and to build the basis of future studies on the light-matter interaction in strong coupling regime.
IPER-Nano2 is expected to result in several breakthroughs in the field of p-NCs and nanophotonics. These include a comprehensive description of their electronic, excitonic and spin properties and an optimized coupling to photonic structures to bring them at the state of the art of single-photon generation with quantum systems at room and low temperatures. The long-term perspectives of this project include the exploration of the strong-coupling regime with both fundamental and technologically relevant effects, such as, few photon non-linearities (as expected from the low dielectric screening in p-NCs) which is a key element for quantum information processing.
IPER-Nano2 brings together three complementary partners: the Institut des Nanosciences de Paris (INSP) has a double expertise in synthesis of colloidal NCs and opto-electronic and spin properties of nanostructures, the Laboratoire Pierre Aigran (LPA) has a long-experience in linear and non-linear coherent spectroscopy of nanostructures, and quantum electrodynamic effects and the Laboratoire Kastler Brossel (LKB) has a recognized expertise in quantum optics. IPER-Nano2 is an ambitious and high reward project and the engaged consortium is uniquely positioned to tackle the challenges posed by the proposal.
Madame Maria Chamarro (Institut des nanosciences de Paris)
The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.
INSP Institut des nanosciences de Paris
LPA Laboratoire Pierre Aigrain
LKB Laboratoire Kastler Brossel
Help of the ANR 488,037 euros
Beginning and duration of the scientific project: September 2018 - 48 Months