Data and Time |
May 20 , 2011, 11:00 AM-12:15 PM |
Location |
Bahen Center, Room 2175 |
Host |
Prof. Eleftheriades |
Quantum optics of hyperbolic metamaterials
Zubin Jacob
University of Alberta
Abstract:
Nanotechnology has paved the way for artificial materials which have
electromagnetic, mechanical, thermal and acoustic properties beyond those
which are ordinarily found in nature. Nanostructured materials hold the
promise:- to usher in a new generation of photonic devices with imaging and
sensing capabilities well beyond the reach of conventional optical systems,
to drive CMOS compatible nanophotonics research for sustaining Moore's law
and even address pressing societal needs of solar energy harvesting. This
talk will focus on optical metamaterials with intriguing physical properties
for device applications.
The particular class of metamaterials considered have a hyperbolic
dispersion relation for propagating electromagnetic waves in the medium. We
unravel a unique singularity in the photonic density of states (PDOS) of
such hyperbolic metamaterials. The remarkable property which sets it apart
from other photonic systems is the broad bandwidth in which the PDOS
diverges paving the way for a new approach to controlling broadband
light-matter interaction. We use the unique electromagnetic metamaterial
states that cause the divergence in the PDOS for two specific device
applications: subdiffraction imaging and quantum optics
We will first present the Optical Hyperlens, a metamaterial imaging device
that can break the age old diffraction limit. We will review the progress
made by different groups on its experimental realization for applications
such as nano-bio imaging and subdiffraction lithography.
The main focus of the presentation will be on quantum optics utilizing
hyperbolic metamaterials. The spontaneous emission from an atom or
artificial atoms such as quantum dots can be enhanced and directional in the
vicinity of such hyperbolic metamaterials leading to a metamaterial
structure that exhibits a broadband Purcell effect
Biography:
Zubin Jacob is currently an assistant professor of ECE at University of
Alberta, Canada. He completed his Ph.D from Purdue university (2010) where
he received the Dmitri N. Chorafas best dissertation prize awarded only to
around 20 students annually. He completed his M.A.E.E (2006) and M.S.E.E
(2007) from Princeton University and B.Tech in Electrical Engineering (2004)
from the Indian Institute of Technology - Bombay. He is also the recipient
of the Best Student Paper/Poster Presentation Prize at ETOPIM 7 (2006), the
SPIE Graduate Fellowship Award for potential long range contributions to
optics and optical engineering (2008), Theodor Maiman Best Student Paper
Award finalist position at CLEO-IQEC (2009) and the IEEE Photonics Society
fellowship (2010). He serves as a reviewer for Optics Letters, Optics
Express, JOSA B, Applied Physics B, Journal of Applied Physics, Applied
Optics and is a member of IEEE, OSA, SPIE and APS.
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