RCQM Distinguished Lecture "Building the next generation atomic clock based on quantum material".

Building the next generation atomic clock based on quantum material  

 Jun Ye

JILA, National Institute of Standards and Technology and University of Colorado

Boulder, Colorado 80309-0440, USA

 

Coherent light-matter interactions have entered a new regime where optical coherence is maintained over many seconds while thousands of atoms are prepared in precisely engineered quantum states. These capabilities have allowed us to achieve a new generation of atomic clocks with accuracy at the 18th digit.  The progress of optical lattice clock to this level of accuracy has also benefited greatly from the understanding of atomic interactions. Meanwhile, the unprecedented precision of clock spectroscopy has enabled the exploration of many-body quantum systems including spin interactions under SU(N) symmetry. Our recent work on this combined front of quantum metrology and many-body physics includes the probe of spin-orbital physics in the optical lattice and the investigation of a Fermi degenerate gas of tens of thousands Sr-87 atoms configured as a band-insulator in a three-dimensional magic-wavelength optical lattice. We now demonstrate an atom-light coherent interaction time approaching 10 seconds, and show a clear path for improving the clock performance into the next decimal point.   

Location: Brockman Hall for Physics - Room 101
6100 Main St.
Houston , Texas 77005

Date: Feb. 15, 2017, midnight - Feb. 15, 2017, 11:59 p.m.