Member, NIST Gallery of Distinguished Alumni (2023)
NIST Symposium: "From Atomic Structure to Bose Condensates: A 40-year NIST journey with Charles Clark (2022)
Member, Cosmos Club (2022)
Honorary Fellow, Bangladesh Physical Society (2021)
NIST Edward Uhler Condon Award (2013 and 2002)
Award for Information Technology Achievement, Government Computer News (2011)
Gold Medal, U.S. Department of Commerce (2011 and 2004)
NIST Fellow (2010)
NIST Bronze Medal (2009)
R&D 100 Award (2008)
Distinguished Presidential Rank Award, U.S. Senior Executive Service (2007)
Physical Sciences Award, Washington Academy of Sciences (2003)
Fellow, Washington Academy of Sciences (2003)
Archie Mahan Prize, Optical Society of America (2002)
NIST Safety Award (2002)
Fellow, American Association for the Advancement of Science (2001)
Fellow, Institute of Physics (1999)
Appointed to Senior Executive Service, U.S. Department of Commerce (1997)
Silver Medal, U.S. Department of Commerce (1994)
Fellow, Optical Society of America (1994)
Fellow, American Physical Society (1992)
NIST Equal Employment Opportunity Award (1991)
National Bureau of Standards Chapter of Sigma Xi Excellence in Research Award (1987)
National Research Council Postdoctoral Research Associateship, National Bureau of Standards (1981)
Editor for Scientific Applications, NIST Digital Library of Mathematical Functions (1998 – present)
Chair, Technical Group on Optical Cooling and Trapping, Optical Society of America (2018-2020)
NIST Co-Director, Joint Quantum Institute (2011-2016)
Retiring Chair (2011), Chair (2010) and Chair Elect (2009), Physics Section, American Association for the Advancement of Science
Past Chair (2006), Chair (2005), Chair-Elect (2004), and Vice-Chair (2003), Division of Atomic, Molecular, and Optical Physics, American Physical Society
Chair, Organizing Committee, NIST Workshop on Quantum Computing and Communication, Gaithersburg, MD (1994)
Visiting Scholar, Merton College, University of Oxford (2023, 2019 and 2017)
Visiting Scholar, National University of Singapore (2007 – 2019)
Distinguished Visiting Professor of Quantum Physics, University of Malaya (2013 – 2015)
Adjunct Professor, Australian National University (2012 – 2014)
Dr. Lee Visiting Fellow, Christ Church, University of Oxford (1999)
Visiting Fellow, Research School of Physical Sciences, Australian National University (1992)