The Laboratory for Physical Sciences (LPS, www.lps.umd.edu) has an immediate vacancy for a postdoctoral researcher in its Quantum Information Science (QIS) research group. LPS seeks an experimental physicist, or other suitably qualified Ph.D., to study Reversible Digital Logic at its College Park, MD location, adjacent to the University of Maryland campus. LPS research has conducted theoretical studies [1, 2], one of which [2] was recently recognized with the 2021 Van Duzer award for the best contributed paper to the IEEE Transactions on Applied Superconductivity. The LPS approach to energy efficiency is based on the ballistic traversal of single-flux quanta (SFQ) into and through gates (with no power applied to the gates). Ot