The Institute for experimental quantum metrology was founded in 2009 as a joint institute of PTB and Leibniz Universität Hannover (LUH) with the aim of advancing time and frequency metrology and novel quantum technology with trapped ions. The institute consists of three groups: "Quantum Logic Spectroscopy" (Prof. Dr. Piet O. Schmidt), "Trapped-Ion Quantum Engineering" (Prof. Dr. Christian Ospelkaus) and "Multi-Ion Clocks" (PD Dr. Tanja E. Mehlstäubler). Their shared research interest is the precise control of atomic quantum systems for metrology, tests of fundamental physics as well as the utilisation of many-body systems and quantum correlations for precision measurements.
Publication in New Journal of Physics: Detection of motional ground state population of a trapped ion using delayed pulses (copy 1)
Detection of motional ground state population of a trapped ion using delayed pulses F Gebert1, Y Wan, F Wolf, Jan C Heip and Piet O Schmidt http://dx.doi.org/10.1088/1367-2630/18/1/013037
Quantum Algorithmic Readout in Multi-Ion Clocks M. Schulte, N. Lörch, I. D. Leroux, P. O. Schmidt, and K. Hammerer http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.116.013002
Publication in Metrologia:Analysis of thermal radiation in ion traps for optical frequency standards
Analysis of thermal radiation in ion traps for optical frequency standards iopscience.iop.org/0026-1394/52/6/842
Jonas Keller receives Ph. D. with distinction (summa cum laude). We congratulate him on this achievement.
Publication in the Journal of Applied Physics: Precise determination of micromotion for trapped-ion optical clocks
Precise determination of micromotion for trapped-ion optical clocks J. Keller, H. L. Partner, T. Burgermeister and T. E. Mehlstäubler Precise determination of micromotion for trapped-ion optical clocks