RESEARCH SPOTLIGHT
Hi, I am
Michele Perna
HOST INSTITUTE
Thales Research & Technology
PROJECT TITLE
Optimization of Coupled-Microring Reservoir for Optical Computing
KEY WORDS
Neuromorphic Photonics, Integrated Photonics, Analog Computing, Optimization
RESEARCH AIM
My research aims to harness the intrinsic dynamics of photonic systems for computation so that novel, fast, and energy-efficient computing architectures inspired by neural processing can be developed.
RESEARCH OVERVIEW
My research is in neuromorphic photonics, a field that explores how light-based technologies can be used to perform computing tasks inspired by the brain. I study how photonic systems—especially integrated devices like coupled microring resonators—can process information by taking advantage of their natural physical dynamics, including both linear and nonlinear behavior. These systems can act as physical “computers” that process signals through their intrinsic responses, similar to reservoir computing. I combine theoretical work, computer simulations, and experimental measurements to understand and improve these devices. The goal is to develop fast, energy-efficient photonic hardware for future computing technologies beyond conventional electronics.
RESEARCH CHALLENGE
Having very good control over some physical parameters of an integrated photonic chip is essential for doing proper optimization, but can also be very hard to achieve.
RESEARCH INNOVATION
I believe that our approach of implementing black box algorithm directly to photonic integrated circuits, especially with out systems, is a quite unique approach
RESEARCH IMPACT
I am a very curious person and I love learning new things. What excites me most about research is the possibility of taking an idea and implementing it experimentally to see if it actually works (hopefully it does!). The process of transforming a concept into a real experiment and exploring the outcome is what I find most rewarding.
RESEARCH SUMMARY
My research focuses on neuromorphic photonics, investigating the linear and nonlinear dynamics of integrated photonic systems for unconventional computing applications. In particular, I study photonic architectures that exploit complex dynamical behavior to perform information processing tasks inspired by reservoir computing. My work includes the analysis and optimization of photonic integrated circuits based on coupled microring resonators, as well as the exploration of alternative dynamical platforms such as optomechanical oscillators. Through a combination of theoretical modeling, numerical simulations, and experimental characterization, I examine how the intrinsic dynamics, memory effects, and nonlinear responses of photonic systems can be harnessed for efficient computation. The broader goal is to develop scalable photonic hardware capable of implementing neuromorphic computing paradigms with high speed, low latency, and reduced energy consumption.
RESEARCH VISUAL
RESEARCH JOURNEY
RESEARCH SECONDMENT
Université libre de Bruxelles (ULB), Belgium (2 months), IFISC-UIB, Spain (2 months) & Aston University, United Kingdom (2 months)
During my secondments at Université libre de Bruxelles (ULB), Belgium, IFISC-UIB, Spain, and Aston University, United Kingdom, I will broaden my expertise in photonic computing through collaboration with leading research groups across Europe. At ULB, I will further explore integrated photonic systems for optical reservoir computing, gaining deeper insight into photonic reservoir computing. At IFISC-UIB, I will strengthen my understanding of the theory of complex nonlinear systems and its application to photonic neural networks. At Aston University, I will investigate alternative optical and photonic neural network architectures while expanding my practical research experience in the field.
LEARNING GOALS
Personally, I am excited about the possibility of tackling similar problems from new perspectives. I want to learn as much as possible from the other people in our consortium, and I also hope to contribute so that they can learn something from me as well.
RESEARCH BENEFITS
Secondments can strengthen my research by providing access to complementary expertise, tools, and experimental platforms. They enable me to improve my skills in modeling, characterization, and optimization of photonic systems while gaining new perspectives on neuromorphic architectures.
CAREER DEVELOPMENT
A secondment can support my future career plans by expanding my professional network and connecting me with researchers working in complementary areas of photonics and neuromorphic computing. This exposure not only strengthens potential collaborations but also increases visibility within the field. In addition, it provides opportunities to develop new technical skills and gain experience in different research environments, which enhances my profile for both academic and industrial career paths.
MORE THAN PHD
Why did you decide to join POSTDIGITAL+ ?
I joined POSTDIGITAL+ because it combines photonics and bio-inspired computation in a highly interdisciplinary environment, offering the opportunity to collaborate widely, broaden my perspective, and further develop my research in neuromorphic photonics.
What do you think is the biggest advantage of being part of the International Doctoral Network?
I believe the main advantage is being put in direct contact with leading experts in your research field. This provides an opportunity to build a large and strong professional network.
What skill have you developed the most so far?
So far, I have developed a wide range of programming and laboratory skills. Beyond the technical aspects, I have also learned the importance of effective time management and organization. Research has taught me to be patient and persistent, as meaningful progress often comes slowly and requires sustained effort over long periods.
What are your career ambitions after completing your doctorate?
I have not yet decided whether my future lies in academia or industry. However, I am certain that I want to continue working at the intersection of machine learning and photonics, contributing to the development of next-generation intelligent photonic systems.
What inspired you to pursue this research Area?
With a background in photonics, I was excited by the idea of combining it with bio-inspired computation. I am also a very curious person, and this has given me the opportunity to expand my knowledge beyond my core academic path.
What surprised you most since starting your PhD?
Since starting my PhD, I have thoroughly enjoyed immersing myself in French culture and exploring life in Paris. I have also been impressed by the collaborative spirit of the POSTDIGITAL+ consortium and how quickly we built a strong sense of community despite coming from diverse backgrounds.