Chasing the Eighteenth Digit: Exploring the Limits of Timekeeping

Add to your list(s) Download to your calendar using vCal

• Dr Ian D. Leroux QUEST Institute for Experimental Quantum Metrology
• Thursday 03 April 2014, 15:00-16:00
• Small Lecture Theatre, Cavendish Laboratory, Department of Physics.

If you have a question about this talk, please contact Leona Hope-Coles.

The accuracy of state-of-the-art optical frequency standards based on trapped ions is now limited by relativistic effects, principally the time dilation due to the ions’ thermal motion in the trap and uncertainty on the gravitational red shift. After a brief introduction to timekeeping and optical frequency standards in general, I will discuss the potential of clocks to serve as gravitational potential sensors, new laser-cooling techniques to help control motional time-dilation shifts in ion traps at the level required for such relativistic geodesy, and the role that quantum entanglement may play in enhancing the performance of the next generation of frequency standards.

This talk is part of the Special Departmental Seminars series.

This talk is included in these lists:

• All Cavendish Laboratory Seminars
• Centre for Health Leadership and Enterprise
• Featured lists
• ME Seminar
• Neurons, Fake News, DNA and your iPhone: The Mathematics of Information
• School of Physical Sciences
• Small Lecture Theatre, Cavendish Laboratory, Department of Physics
• Special Departmental Seminars
• Thin Film Magnetic Talks

Note that ex-directory lists are not shown.