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Todd Pittman

Todd Pittman
Contact Information
Physics, Rm 318

Quantum Information Group


Graduate Program Director – Physics


Ph.D. Physics – UMBC, 1996
M.S. Physics – UMBC, 1992
B.S. Physics – Bucknell University, 1990

Previous Experience

Dr. Pittman was previously an experimental physicist at the Johns Hopkins University Applied Physics Laboratory.

Professional Interests

My primary interests are in the areas of quantum information, quantum optics, nonlinear optics, and foundations of quantum mechanics. My current research efforts involve experimental work on:

  • Quantum computing with single photon qubits: Linear Optics Quantum Computing (LOQC), photonic quantum logic gates, quantum communication systems, and other topics in quantum information processing.
  • Quantum Entanglement: Parametric Down-Conversion (PDC) sources, entangled photon pairs, “entangled photon holes” (EPH’s), macroscopic phase-entangled coherent states, and other non-classical states for quantum information processing.
  • Ultralow-power nonlinear optics: Nanowatt and “few-photon” level nonlinearities using sub-wavelength diameter tapered optical nanofibers (ONF’s) suspended in atomic alkali vapors (Rubidium) and noble gases (metastable Xenon), and high-finesse optical cavities filled with noble gases (metastable Xenon).

Selected Publications

“Nanofiber-segment ring resonator,” D.E. Jones, G.T. Hickman,J.D. Franson, and T.B. Pittman, Opt. Lett. 41, 3683 (2016)

“Ladder-type electromagnetically induced transparency using nanofiber-guided light in a warm atomic vapor,” D.E. Jones, J.D. Franson, and T.B. Pittman, Phys. Rev. A 92, 043806 (2015)

“Generation of entangled photon holes using quantum interference,” T.B. Pittman and J.D. Franson, Phys. Rev. A 74, 041801(R) (2006)

Experimental controlled-NOT gate for single photons in the coincidence basis, T.B. Pittman, M.J. Fitch, B.C. Jacobs, and J.D. Franson, Phys. Rev. A 68, 032316 (2003)

“Violation of Bell’s inequality with photons from independent sources,” T.B. Pittman and J.D. Franson, Phys. Rev. Lett 90, 240401 (2003)

“Can two-photon interference be considered the interference of two photons?,” T.B. Pittman, D.V. Strekalov, A. Migdall, M.H. Rubin, A.V. Sergienko, and Y.H. Shih, Phys. Rev. Lett. 77, 1917-1920 (1996).

A complete list of publications can be found at

Photograph of the Quantum Information Group research laboratory at UMBC

Photograph of the Quantum Information Group research laboratory at UMBC.