Event

LPS Seminar: Glenn Solomon, Characterizing the light emitted from single semiconductor quantum dots

Wednesday, April 22, 2015
3:30 p.m.
LTS Conference Room, 8080 Greenmeade Drive, College Park
Bill Johnson
wbj@lps.umd.edu

Laboratory for Physical Sciences Seminar
Characterizing the light emitted from single semiconductor quantum dots

Glenn Solomon
Joint Quantum Institute
National Institute of Standards and Technology
University of Maryland

Abstract
Semiconductor quantum dots (QDs) of InAs in GaAs are bright emitters of discrete photons. They can be used in a variety of fundamental quantum optics experiments and will likely contribute to applications in quantum information. The benefits of semiconductor QDs in quantum information are integration and scaling. Yet, the very properties that allow these benefits also create intrinsic problems.

After a general introduction to the fabrication and optical properties of QDs, I will discuss second order correlation measurements of QD light. The second-order auto-correlation is important in distinguishing between classical and quantum light sources. It is particularly important here for the characterization of the single-photon purity. The second-order cross-correlation offers insight into the indistinguishability properties of the light. As technology improves and material system change, these measurements naturally evolve. I will discuss one or two evolutions in these techniques, and make some connections to applications using QD light.

Biography
Dr. Glenn Solomon is a fellow of the Joint Quantum Institute, a collaboration between the National Institute of Standards and Technology, and the University of Maryland.  He received his undergraduate degree from Duke University, Masters degrees from Duke and Stanford University, and his Ph.D. from Stanford in 1996. He was a founder and President of CBL Technologies, a GaN related materials company; and is a fellow of the American Physical Society. His current interests are in semiconductor quantum optics, nano photonics and quantum information.

Note
LPS is located at 8050 Greenmead Drive in College Park. There is parking at LPS and overflow parking at the adjacent LTS building but not at the 4H building. LPS is on the UMCP shuttle route; take #105 for the Courtyard Apts. Please use the phone on the left hand side of the front door to call the receptionist for entry.