MPSP Lecture Series 2021
Firsthand photonics research news - join the free lectures of our Fellows!
The science of light has just as many facets as light itself - from nanophotonics to quantum optics or strongfield physics there are countless interesting fields of research. Our MPSP Fellows, i.e. researchers, are active in many of them. At universities and non-university research institutions, they work to elicit all the secrets of light and to make it usable for mankind in a wide variety of ways.
And now you can get some insights into this research! From September to November 2021 we have an exciting MPSP Lecture Series for you (almost) every Wednesday at 5 p.m. CET (= 3 p.m. UTC | 11 a.m. EDT | 8.30 p.m. IST). A MPSP Fellow reports 45 minutes on her/his research. Afterwards, you can ask and discuss questions for 15 minutes.
The lecture series is completely free and takes place virtually via Zoom. All you have to do is to register for the lectures you are interested in:
SEMICONDUCTING 2D-MATERIALS: PHOTONIC PROPERTIES AND APPLICATION POTENTIAL
In this lecture we shall discuss optical properties of Transition-Metal Dichalcogenides, a class of monolayer materials with many interesting optical properties. We will then discuss how they can be integrated with optical systems and why they have a few fancy tricks up their sleave that classic materials just don’t. Based on this we shall explore some recent experiments and speculate wildly about possible applications.
NONLINEAR INFREROMETRY IN QUANTUM OPTICS
A nonlinear interferometer is a sequence of two coherent nonlinear optical processes that can enhance or suppress each other. In quantum optics, a nonlinear interferometer is formed by placing in sequence two sources of photon pairs, pumped coherently. As a result, one can achieve a phase sensitivity beating the shot-noise limit, homodyne detection without a local oscillator, and sensing with undetected photons.
TOPIC: X-rays in a Quantum World: From Cavity QED to Quantum Imaging
With increasing brilliance of modern X-ray sources like synchrotrons and x-ray lasers, quantum aspects of the interaction of x-rays with matter come into reach. This talk will elucidate what has been achieved so far and which oppotunities lie ahead of us. In this connection, x-ray cavities and photon correlations play a decisive role.
Quantum communication in fiber and satellite systems
This talk will highlight recent activities in quantum communication with a focus on quantum cryptography. Currently several programmes work towards quantum cryptography in fiber and satellite-based systems under realistic conditions.
TOPIC: A few applications of Photonics crystal fibres. From monitoring chemistry to generating non-classical light.
Gas-filled hollow-core photonic crystal fibres can serve efficiently to generate tunable source of pair of photons and might even allow triplet generation. A totally different way to use those fibre is to monitor chemical reactions.
TOPIC: Electronics with ultrashort light fields?
Since the invention of the femtosecond frequency comb, we have full control over the optical field of ultrafast laser pulses. So what's missing to employ this field control to drive electrons, similar to microwave fields driving electrons in today's electronics applications?
I will discuss where we stand in controlling free electrons at the surface of needle tips with the help of laser fields, which might be categorized as vacuum nanoelectronics, and I will also show the status of controlling electrons inside of conducting materials with the help of intense few cycle light fields. With deep insights to strongfield physics at the surface of and inside of conducting solids we have gained, lightwave electronics is coming closer.
TOPIC: Simulation methods for optical systems
Optical systems can be quite different and also the requirements on the simulation of such systems can differ considerably. So, this lecture can only give an overview about several classical simulation methods for optical systems. There are geometrical optical methods or wave-optical methods, depending on the application. We will shortly discuss the following methods and their limits of application: paraxial geometrical optical methods, ray tracing, scalar wave-optical methods (paraxial or non-paraxial), vectorial Debye integral for calculating the intensity distribution in the focus of an optical system.
Topic: Distributed Fiber Optical Sensors
Fiber optical sensors offer great advantages due to their small size, high sensitivity and immunity against electromagnetic interference. A further aspect is the possibility to design sensors that measure at multiple points along the fiber or perform a distributed measurement. The talk will show some techniques to allow for the localization of separate and distributed sensor events. Further, some example from current projects in the photonics research group of the Institute of Microwaves and Photonics will be presented.