Opto-Excitonic Circuits: Processing Light with Matter by
Parag Deotare
Thursday, April 9, 2015 11:00 AM to 12:00 PM
CREOL Room A214
CREOL Room A214
Celebrating the International Year of Light 2015
Parag Deotare
Postdoctoral associate at the Organic and Nanostructured
Electronics Laboratory (ONELab) at Massachusetts Institute of Technology.
Abstract
Progress of the current hybridized photon-electron
communication technology has been slowed down by the limited efficiency of
electrical interconnects. While optical interconnects is a viable solution, it
falls short to offer an efficient long term solution, since logic operations
will be performed using electrons. Optical interconnects in conjunction with
excitonic circuits offer a plausible solution since it not only overcomes the
losses and delays experienced by electrons but also benefits from seamless
transformation between an exciton and a photon.
In my talk, I will discuss the importance of reconfigurable
optical nanocavities for on-chip optical interconnects. In particular, I will
talk on photonic crystal nanobeam cavities and discuss an all-optical
reconfiguration technique based on optical gradient force. I will introduce the
benefits of excitonic circuits and discuss a technique to visualize exciton
diffusion, an important parameter for designing excitonic devices. I will also
discuss an excitonic modulator based on charged excitons (trions) in tungsten
diselenide (WSe2) monolayer. Such opto-excitonic circuits open a new
way to process information reaping the benefits of unprecedented energy
efficiency offered by a photon as an information carrier.
Biography
Parag is a postdoctoral associate at the Organic and
Nanostructured Electronics Laboratory (ONELab) at Massachusetts Institute of
Technology. His research interest lies in understanding light - matter
interaction in nanostructured materials for applications in data communications
and life sciences. His work spans the area of optical nanocavities, cavity
quantum electrodynamics, optomechanics, nanofabrication and optical
interconnects. Parag received his BE degree in Electrical Engineering from
University of Pune, India in 2004, MS degree from Texas A&M University in
2007 and PhD from Harvard University in 2012.
For additional information:
Dr. Ayman Abouraddy
Associate Professor of Optics
407-823-6809
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