Quantum information, decoherence-free subspaces and a Michelson-Morley test with electrons

Date: 
Monday, October 27, 2014 - 4:15pm
Location: 
Room #1 LeConte Hall
Author/Speaker: 
Hartmut Haeffner
Affiliation: 
University of California, Berkeley
Public Lecture: 
Yes
Webcast: 

Quantum information processing promises to speed up certain computational tasks. The expectations are high, but many technological hurdles have to be overcome before we can build a quantum computer. Nevertheless, already today quantum information allows for novel insights into physics. In this talk, I will summarize our progress towards building an ion trap quantum computer as well as a surprising application of quantum information to fundamental physics. Using the precise experimental control over individual ions, we verify Lorentz invariance at a level of 10-18, improving the limits set by traditional Michelson-Morley experiments by a factor of five.