PHYSICS/BK21 SEMINAR [ 7. 8 ]

“Quantum ghost image identification and fiber-based slow-/fast-light effect”

* Speaker : Dr. Heedeuk Shin (Univ of Rochester)       

* Place : Physics Seminar Room (Science Bldg, 3-201)

* Date & Time : July  8 (Thu.)  3:00  ~  4:00 pm

 * Abstract

 Images are usually formed by recording many optical events, but here I present experimental results of impressing transverse image information onto a single photon and retrieving the image information from the photon with a holographic sorter. The use of a holographic sorter in quantum `ghost imaging makes it possible to extract the ghost image information using position-correlated photon pairs generated by spontaneous parametric down conversion with high confidence levels.

In addition, I study slow-/fast-light pulse propagation in a dispersive medium. I begin with a review of basic concepts of group velocity and group delay. I then present a review of current fiber-based technologies capable of producing slow-light effects with emphasis on the applicability of these technologies to telecommunications. Finally, I will give a brief summary of works from Professor Robert W. Boyds group in this field.

Contact Person : Prof.  Yoon-Ho Kim (054-279-2093, yoonho@postech.ac.kr)