Prof Tobar leads the Quantum Technologies and Dark Matter Research Laboratory at UWA (qdmlab.com). The lab is part of the nationwide Australian Research Council Centres of Excellence; Engineered Quantum Systems and Dark Matter Particle Physics. His broad research interests encompass the disciplines of frequency metrology, precision and quantum measurements, low temperature, condensed matter, and quantum physics. Over his career he has developed a variety of measurement tools, allowing investigations in many areas of Physics and Engineering, leading to many prestigious awards. In particular, he has developed technologies to undertake precise tests of fundamental physics and has also adapted such technology to the commercial sector, which includes 13 patents on precision radar and detectors and over 350 refereed journal publications. He also leads the well-known ORGAN axion Dark Matter detector collaboration co-funded by both Centres, and in 2019 his group became an official collaborator of the famous Axion Dark Matter eXperiment situated at the University of Washington, Seattle. Publication and citaion details may be found at: https://scholar.google.com.au/citations?user=ClNhYy0AAAAJ&hl=en

Tobar has published prolifically with 150 book chapters and refereed journal publications in the area of instrumentation and experimental physics, as well as several patents. He has pursued a range of topics, from the invention of new methods for precise frequency/phase generation to application of these to the commercial and space sector, and to test fundamental physics. Particular areas of endeavor include high-Q dielectric resonator technology, precision oscillators and low noise phase and amplitude measurement systems. His tests of the foundations of physics include the most sensitive tests of Einstein's special theory of relativity. During 2007 he was elevated to the Fellowship of the IEEE.