[Jlab-seminars] Fwd: Physics Colloquium Friday, November 15, 2013

[Mary Fox]

-------- Original Message --------
Subject: 	Physics Colloquium Friday, November 15, 2013
Date: 	Mon, 11 Nov 2013 16:08:10 +0000
From: 	Wilkinson, Eleonor V <evwilk at wm.edu>
To: 	'physics0607 at physics.wm.edu' <physics0607 at physics.wm.edu>



*_PHYSICS COLLOQUIUM_*

Friday, November 15, 2013

4:00 PM

Small Hall, Room 110

*Dr. John Howell *[Host: Irina Novikova]**

University of Rochester

*Title of Talk:*

/“Entropy, Information and Compressive Sensing in the Quantum Domain”/

*Abstract:*

Compressive sensing utilizes sparsity to realize efficient image 
reconstruction. It is a valuable processing technique when cost, power, 
technology or computational overhead are limited or high. In the quantum 
domain technology usually limits efficient acquisition of weak or 
fragile signals. We have used compressive sampling for low-flux laser 
Radar [1], photonic phase transitions, high resolution biphoton ghost 
imaging [2], Ghost object tracking [3] and high dimensional entanglement 
characterization [4]. As shown below, we were able to efficiently and 
rapidly reconstruct high dimensional joint probability functions of 
biphotons in momentum and position. With conventional raster scanning 
this process would take approximately a year, but using double-pixel 
compressive sensing, the pictures were acquired in a few hours with 
modest flux.

*//*

*//*

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

Thanks,

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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