PUBLICATIONSREFERRED:QIS Publications 20212021: Journal Publications1. R.J. Birrittella, P.M. Alsing, C.C. Gerry, "The parity operator: Applications in quantum metrology", AVS Quantum Sci. 3, 014701 (2021).2. P.L. Kaulfuss, P.M. Alsing, E.E. Hach, III, A.M. Smith, and M.L. Fanto, "Direct