Physics and Astronomy

All Majors & Minors

Thomas Carroll

Our work explores the control of quantum mechanical interactions in strongly interacting systems. Our primary goal is to further the fundamental understanding of the quantum world. We usually work with highly excited atoms, or “Rydberg” atoms, which interact strongly with each other but weakly with the environment. We can easily tune their energy levels by applying electric fields. These properties – easy tunability and strong interactions – make our research of particular interest to those studying quantum computing.

We have an NSF-funded collaboration with colleagues at nearby Bryn Mawr College. Ursinus students participate in regular group meetings at Bryn Mawr during the summer and routinely collaborate with students there to collect data. Here at Ursinus, we have a small atomic physics lab and a state of the art supercomputer dedicated to modeling our quantum systems. Students work on a variety of projects including experimental and computational components.

Successful students will have the opportunity to present their research at national conferences. In recent years, students have presented in Atlanta, Tucson, Madison, Orlando, Anaheim, Providence, and Sacramento.

Title

Professor of Physics/ CIE Chair

Department

Physics and Astronomy

Degrees

  • B.S., University of Richmond
  • Ph.D., Bryn Mawr College

Teaching

Physics 111Q: General Physics I
Physics 112: General Physics II
Physics 121Q: Spacetime and Quantum Physics
Physics 122: Electricity, Magnetism, and Waves
Physics 207W: Modern Physics
Physics 305: General Relativity
Physics 401: Quantum Mechanics
Physics 408W: Advanced Laboratory
Physics 450W: Senior Seminar

Research Interests

Computational atomic physics
Experimental atomic physics
Strongly interacting quantum systems
Rydberg atoms
Atom-field interactions

Recent Work

* denotes Ursinus students

 

Publications

 

Conference Presentations

 

  • Vincent C. Gregoric, Xinyue Kang*, Zhimin Cheryl Liu, Zoe A. Rowley*, Thomas J. Carroll, and Michael W. Noel, Directed Field Ionization, in Bulletin of the American Physical Society, Vol. 62 (2017) p. U6.00010.
  • Xinyue Kang*, Zoe A. Rowley*, Thomas J. Carroll, and Michael W. Noel, Directed Field Ionization: A Genetic Algorithm for Evolving Electric Field Pulses, in Bulletin of the American Physical Society, Vol. 62 (2017) p. K1.00081.
  • Zhimin Cheryl Liu, Vincent C. Gregoric, Thomas J. Carroll, and Michael W. Noel, Experimental optimization of directed field ionization, in Bulletin of the American Physical Society, Vol. 62 (2017) p. K1.00080.
  • Hannah Hastings, Noura B. Jaber, Georgia Piatt, Vincent C. Gregoric, Thomas J. Carroll, and Michael W. Noel, Diode laser frequency stabilization using a low cost, low finesse Fabry-Perot cavity, in Bulletin of the American Physical Society (American Physical Society, 2016).
  • Vincent C. Gregoric, Hannah Hastings, Thomas J. Carroll, and Michael W. Noel, Quantum beats in the field ionization of Rydberg atoms in the presence of magnetic fields, in Bulletin of the American Physical Society (American Physical Society, 2016).
  • Jacob L. Bigelow*, Jacob Hollingsworth*, Jacob T. Paul*, Matan Peleg*, Veronica L. Sanford*, Thomas J. Carroll, and Michael W. Noel, Simulations of the angular dependence
    of the dipole-dipole interaction among Rydberg atoms, in Bulletin of the American Physical Society (American Physical Society, 2016).
  • June, 2015 - Rachel Feynman, Jacob Hollingsworth*, Michael Vennettilli*, Tamas Budner*, Ryan Zmiewski*, D. P. Fahey, T. J. Carroll, and M. W. Noel, Quantum Interference in Field Ionization of Rydberg Atoms, DAMOP 2015, Columbus, OH
  • June, 2015 - V. C. Gregoric, T. J. Carroll, and M. W. Noel, Enhanced Selective Field Ionization with Optical Dumping. DAMOP 2015, Columbus, OH.
  • June, 2014 - Donald P. Fahey, Thomas J. Carroll, Michael W. Noel, Mapping the dipole-dipole interaction among ultracold Rydberg atoms, DAMOP 2014, Madison, WI.
  • June, 2014 - Vincent C. Gregoric, Thomas J. Carroll, Michael W. Noel, Millimeter wave spectroscopy of ultracold Rydberg atoms, DAMOP 2014, Madison, WI.
  • June, 2014 - Tamas Budner*, Jacob Hollingsworth*, Michael Vennettilli*, Ryan Zmiewski*, Donald P. Fahey , Thomas J. Carroll, Michael W. Noel, Quantum control using the Landau-Zener effect, DAMOP 2014, Madison, WI.
  • June, 2013 - Donald P. Fahey, Thomas J. Carroll, Michael W. Noel, Imaging of energy transfer in a frozen Rydberg gas, DAMOP 2013, Quebec City, Canada.
  • June, 2013 - Thomas J. Carroll, Alexander R. Mellus*, Alexander M. Chartrand, Donald P. Fahey, Michael W. Noel, Computational studies of dipole-dipole interactions among Stark manifold states, DAMOP 2013, Quebec City, Canada.
  • June, 2012 - Jon Ward*, Alex Mellus*, Thomas J. Carroll, Donald P. Fahey, Michael W. Noel, Redistribution of atomic population among nearly degenerate Rydberg states through dipole-dipole interactions, DAMOP 2012, Anaheim, CA.
  • June, 2011 - Jon Ward*, Alex Mellus*, Thomas J. Carroll, Michael W. Noel, The Effect of Energy Level Structure on Many-Body Interactions among Rydberg Atoms, DAMOP 2011, Atlanta, GA.
  • June, 2011 - Donald P. Fahey, Michael W. Noel, Thomas J. Carroll, Oscillations in dipole-dipole transitions from nearly degenerate Rydberg states, DAMOP 2011, Atlanta, GA.