Robertus Elbertse is an International Associate in the Nanoscale Processes and Measurement Group. He received his BSc. in Applied Mathematics, BSc. and MSc. in Applied Physics and Ph.D. in Quantum Physics at Delft University of Technology, the Netherlands. His doctoral research focused on studying the lifetime of atomic spin chains using a scanning tunneling microscope (STM), resulting in the development of atomic devices. During this time, he also went to the Center for Quantum Nanoscience (QNS) in Seoul, South Korea. At NIST Robertus has been working with Joseph Stroscio to develop the electron spin resonance scanning tunneling microscopy (ESRSPM) system, to investigate atomic, as well as other, qubit systems.