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Ph.D., Physics, Polytechnic Institute of Brooklyn, Brooklyn, NY, 1967
M.Sc., Physics, Polytechnic Institute of Brooklyn, Brooklyn, NY, 1962
B.Sc., Mathematics, Brooklyn College, Brooklyn, NY, 1960
2007-present: President, NanoRTD, a small business with emphasis on the operation of THz sources based on quantum tunneling devices
2006-present: Research Professor of Physics, Department of Physics, University of Connecticut
2001-2005: Research Professor of Physics, University of Hartford
1981-2004: Scientific Research Associates, Inc (President 1997-2004)
1966-1981: United Technologies Research Center, Senior Theoretical Physicist
 Harold L. Grubin: “Wigner function studies of spin transport in dilute magnetic semiconductor barrier structures”, in Proc. of SPIE, Vol. 5584, 2004.
 Harold L. Grubin: “Wigner function and density matrices and their application to transport properties of semiconductor devices”, in Proc. of SPIE, Vol.3277, 1998.