physics

Distinguished Lecture Series in Physics

The UW-L DLS series in Physics is co-sponsored by the UW-L Foundation, Inc., the Department of Physics, the College of Science and Health, and Wettstein's. The purpose of the series is each year to bring to La Crosse a physicist whose significant accomplishments and communication skills can inspire and enrich the careers of students, faculty, and the community in general. Lectures are open to the public. Previous lectures

2013 DLS Speaker:David Wineland

Dr. David Wineland
2012 Nobel Laureate in Physics

Ion-Storage Group, Time and Frequency Division
National Institute of Standards and Technology

 

Public Lecture

Open to the Public!

5 PM Thursday, October 10, 2013
Skogen Auditorium A, Room 1400, Centennial Hall

Superposition, Entanglement, and Raising Schrödinger's Cat

Research on precise control of quantum systems occurs in many laboratories throughout the world, for fundamental research, new measurement techniques, and more recently for quantum information processing.  I will briefly describe experiments on quantum state manipulation of atomic ions at the National Institute of Standards and Technology (NIST), which serve as examples of similar work being performed with many other atomic,, molecular, optical (AMO) and condensed matter systems across the world.  This talk is in part the "story" of my involvement that I presented at the 2012 Nobel Prize ceremonies.

 

Physics Colloquium

Open to the Public!

3:20 PM Friday, October 11, 2013
Skogen Auditorium A, Room 1400, Centennial Hall

Single Atom Clocks

Atoms absorb electromagnetic radiation at certain precise frequencies.  Knowing this, a recipe for making an atomic clock is fairly simple to state: we first need an oscillator to produce this radiation and a device that tells us when the atoms absorb it, thereby indicating that the oscillator is in synchronism with one of the atoms' absorption frequencies.  To make a clock from this setup, we then simply count cycles of the oscillator - the duration of a certain number of cycles defines a unit of time, for example, the second.  In one of the world's most precise clocks, we count the cycles of an oscillator that has a frequency of 1,052,871,833,148,990.44 cycles per second - synchronous with an absorption frequency in a single 27Al+ ion.  At this level of precision, many effects, such as those due to special and general relativity, can affect our measurements; therefore, our primary task is to determine and correct for these perturbing effects.  For many centuries and still continuing today, a primary application of accurate clocks is for precise navigation.

 

For a printable version of this year's DLS brochure, click here.

For a printable version of this year's DLS poster, click here.

 

For more information, contact :
Dr. Gubbi Sudhakaran, Chair
UW-L Department of Physics
(608) 785-8431
gsudhakaran@uwlax.edu