Can Precision Spectroscopy be performed in Ion Coulomb Crystals?

                                                                 SPECIAL AP-SEMINAR

Trapped and laser-cooled ions allow for a high degree of control of atomic quantum systems. They are the basis for modern atomic clocks, quantum computers and quantum simulators. In 2012, we proposed to use multiple ions trapped as Coulomb crystals for precision spectroscopy, similar to quantum registers in quantum information.  This puts up the challenge to control a nonlinear many-body system with complex and intriguing dynamics. Our approach paves the way to novel optical frequency standards with ultra-high stability and for applications such as relativistic geodesy and quantum simulators in which complex dynamics becomes accessible with atomic resolution. 

The multi-ion clock is operated in a dedicated experiment, where ¹¹⁵In⁺ ions are sympathetically cooled by ¹⁷²Yb⁺ ions. I will report on the status of clock operation and it’s characterization by local and international clock comparisons. Last but not least, I will discuss new limits on fifth forces and possible violation of local Lorentz invariance we obtained using precision spectroscopy in even isotopes of Yb⁺ ions.

https://gsi-fair.zoom.us/j/63856816325
Meeting-ID: 638 5681 6325
Passcode: AP_Seminar
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