| 27 febbraio
Università di Pavia, Dipartimento di Fisica
Photonics and Nanostructures Group
Enhancing the optical functionalities of silicon with photonic nanostructures
Silicon has long been established as the material of choice for the microelectronics industry.
This is not yet true in photonics, where the limited degrees of freedom in material design
combined with the indirect bandgap are a major constraint. Recent developments, especially
those enabled by nanoscale engineering of the photonic properties, are starting to change the
picture, opening up new possibilities for the realization of Si-based photonic nanostructures
with advanced optical functionalities. In this talk we will give an overview of the ongoing
research in this active area. We will focus on resonant silicon nanostructures, in which the
electromagnetic field may be confined to extremely small spatial regions, thus obtaining a
dramatic improvement of both linear and nonlinear optical properties.
| 10 febbraio
Università degli Studi Roma Tre
Of fringes and fridges
Information processing and thermodynamics share common methods and concepts,
notably the one of entropy, and Landauer's principle has established how deep
profound their link is.
In this talk, we will discuss some experiments on which we seek to apply this
philosophy to quantum photonic, by interpreting some quantum information tasks -
entanglement detection, state discrimination, weak measurements - under the lens
| 26 gennaio
Gian Michele Ratto
Istituto di Nanoscienze del CNR e Scuola Normale Superiore di Pisa
A window with a view: two photon microscopy and the secret life of the brain
Two photon microscopy has emerged as a powerful tool to image form and function in the brain
in vivo: neurons and glia can be visualised by means of an ever expanding range of fluorescent
probes and a wide variety of information can be collected in the intact brain. For example,
transgenic mice expressing the Green Fluorescent Protein in selected neuronal population can
be used to image the morphological development of neurons. Functional studies relies on genetically
encoded or synthetic dyes to visualize cellular and network function with sub cellular resolution.
At this time, two photon imaging is the only available tool that allows to peer into neuronal
function in the intact brain at the cell population level. Indeed, intravital imaging has
provided novel insights on brain structure and function with unprecedented temporal and spatial
resolution. The availability of genetic and pharmacological models of brain pathologies, allow
to investigate function and form in the normal and diseased cortex.
In this talk I will give an overview of what we can see in the brain when we put together two
photon imaging with novel genetic sensor to image different aspects of brain cells.