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QIS profile: John Serafini

ORNL's John Serafini.

John Serafini studies integrated photonics for developing secure quantum communications hardware. In this role, John simulates, designs and tests quantum-based photonic integrated circuits.

Substantial institutional investments in equipment and facilities, as well as  recent increases in federal funding from the Department of Energy and other agencies, have positioned John and his colleagues for rapid growth and success.

John joined ORNL in 2021 after working as a postdoc for the Rochester Institute of Technology. He earned his Ph.D. in 2017 from the University of Rochester in physics. His other research interests and focus areas include continuous variable quantum optics, quantum integrated photonics and quantum sensing.

In his spare time, John enjoys playing ultimate frisbee, gardening, laughing with his children, and outdoor adventures.

Read more about John’s career and research here.

ORNL’s quantum research is supported by DOE’s Office of Science. For  more information on ORNL’s quantum research portfolio, visit

UT-Battelle manages ORNL for DOE’s Office of Science, the single largest supporter of basic research in the physical sciences in the United States. DOE’s Office of Science is working to address some of the most pressing challenges of our time. For more information, visit