[Jlab-seminars] Fwd: Physics Colloquium FRIDAY May 2, 2014 - “New Tools for Precision Metrology: Superluminal Lasers and Atomic Ensembles with Ultra-High Compton Frequency ” - Dr. Selim Shahriar

[Mary Fox]

-------- Original Message --------
Subject: 	Physics Colloquium FRIDAY May 2, 2014 - “New Tools for 
Precision Metrology: Superluminal Lasers and Atomic Ensembles with 
Ultra-High Compton Frequency ” - Dr. Selim Shahriar
Date: 	Mon, 28 Apr 2014 18:30:32 +0000
From: 	Wilkinson, Eleonor V <evwilk at wm.edu>
To: 	'physics0607 at physics.wm.edu' <physics0607 at physics.wm.edu>
CC: 	'undergrads0607 at physics.wm.edu' <undergrads0607 at physics.wm.edu>



*_PHYSICS COLLOQUIUM_*

Friday, May 2, 2014

4:00 PM

Small Hall, Room 111

*Dr. Selim Shahriar *[Host: I. Novikova]

Northwestern University

*Title of Talk:*

/“New Tools for Precision Metrology: Superluminal Lasers and Atomic 
Ensembles with Ultra-High Compton Frequency”/

*Abstract:*Precision metrology is the crown jewel of atomic, molecular 
and optical physics.  It has played a key role in practical applications 
such as GPS, inertial navigation, and high speed communication.  It has 
also played an important role in testing the fundamental laws of physics 
with ever increasing accuracy.  In this talk, I will describe two new 
tools of precision metrology, with both practical and fundamental 
applications.  First, I will describe the superluminal ring laser (SRL), 
inside which the group velocity of light may be as high as a million 
times larger than that of the vacuum speed of light, without violating 
causality or relativity.  The SRL and related effects can be tailored to 
make ultra-sensitive sensors for practical applications, as well as for 
precision tests of General Relativity and detection of  gravitational 
waves.  Second, I will describe how interferometry at a Compton 
frequency as high as ten nonillion Hz (10^31 Hz) or a de Broglie 
wavelength as small as ten atto meter (10^-17 m) can be observed by 
measuring the collective states of an ensemble of a million 
non-interacting cold atoms, behaving as a single particle.   I will 
describe how this process can be used to make novel types of atom 
interferometric gyroscope and accelerometers as well as atomic clocks, 
with enhancement in sensitivity over their conventional counterparts.

selim-shahriar*Biography:*Dr. Selim Shahriar is a Professor in the 
Department of Electrical Engineering and Computer Science, and in the 
Department of Physics and Astronomy at Northwestern University.   He is 
also the Director of the division of solid state and photonics within 
EECS.  Dr. Shahriar received his Ph.D. from MIT in 1992.  He has 
published three hundred seventy six papers.  His research interests 
include Applications of Slow and Fast Light, Quantum Computing with 
Trapped Atoms, Gravitational Wave Detection, Tests of General 
Relativity, Holographic and Polarimetric Image Processing, 
Nanophotonics, Atomic Clocks,  Atom Interferometry, and Nanolithography 
using Bose Condensates.   He is a member of the LIGO Scientific 
Collaboration and a Fellow of SPIE and OSA.  Group URL: 
http://lapt.ece.northwestern.edu/

For more information please visit 
https://events.wm.edu/event/view/physics/28686

*//*

*//*

*/*Refreshments will be served in Room 122 at 3:30 PM/*

Regards,

Elle

******

*Eleonor V. Wilkinson*

Administrative & Office Specialist

The College of William & Mary-Physics
Small Hall, Room 123
300 Ukrop Way
Williamsburg, VA 23185

Telephone: 757-221-3503

Fax: 757-221-3540



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