Alessandro Restelli

Since 2013 Alessandro Restelli is the Resident Electrical Engineer at the Join Quantum Institute (JQI), pursuing the mission of enabling advanced custom electronic designs for cutting edge physics experiments. Dr. Restelli has over 15 years of experience in electronic design, optoelectronics, photodetectors, lasers and optics. In 2016 he earned a PhD in Electronics at Politecnico di Milano with a specialization in single photon detection technologies working in the internationally established group of Prof. Sergio Cova. He then moved to the United States working at the National Institute of Standards and Technology (NIST) where he designed high-speed electronics for quantum cryptographic systems. His research interest then became focused on the development of high-count-rate single photon detectors based on periodic gating of single photon avalanche diodes (SPADs). In particular Dr. Restelli is a co-inventor of a gating technique that was successfully patented by NIST and is specifically suited for SPADs based on indium gallium arsenide, greatly increasing their allowable maximum count rates and detection efficiency with possible revolutionary applications in atmospheric sensing and quantum cryptography. More recently at JQI Dr. Restelli has guided the design of innovative instrumentation for atomic and molecular physics experiments, particularly ultra-low-noise controllers for laser frequency stabilization and radio frequency amplitude stabilization for ion traps. Dr. Restelli is particularly committed in accelerating the design and manufacturing cycle of electronic and opto-electronic instrumentation at JQI by teaching circuital simulation, diagnostics and troubleshooting techniques, facilitating reusable and modular electronic design, introducing in-house additive and subtractive manufacturing technologies as well as robotic circuit-board assembly. All these resources are made accessible by Dr. Restelli to JQI researchers, post-docs and students.