Publications (19)
Two-photon laser excitation of trapped 232Th+ ions via the 402 nm resonance line
O. A. Herrera-Sancho, M. V. Okhapkin, K. Zimmermann +5
A generalized Ramsey excitation scheme with suppressed light shift
N. Huntemann, B. Lipphardt, M. Okhapkin +4
Laboratory Limits on Temporal Variations of Fundamental Constants: An Update
E. Peik, B. Lipphardt, H. Schnatz +3
Frequency comparisons and absolute frequency measurements of 171Yb+ single-ion optical frequency standards
E. Peik, B. Lipphardt, H. Schnatz +3
Frequency comparison of ${}^{171}$Yb${}^+$ ion optical clocks at PTB and NPL via GPS PPP
J. Leute, N. Huntemann, B. Lipphardt +11
Excitation of the isomeric ^{229m}Th nuclear state via an electronic bridge process in ^{229}Th^+
S. G. Porsev, V. V. Flambaum, E. Peik +1
New limit on the present temporal variation of the fine structure constant
E. Peik, B. Lipphardt, H. Schnatz +3
Prospects for a Nuclear Optical Frequency Standard based on Thorium-229
E. Peik, K. Zimmermann, M. Okhapkin +1
Optical Clocks in Space
S. Schiller, A. Goerlitz, A. Nevsky +18
High-accuracy optical clock based on the octupole transition in 171Yb+
N. Huntemann, M. Okhapkin, B. Lipphardt +3
Absolute frequency measurement of the In$^{+}$ clock transition with a mode-locked laser
J. von Zanthier, Th. Becker, M. Eichenseer +11
Single-Ion Atomic Clock with $3\times10^{-18}$ Systematic Uncertainty
N. Huntemann, C. Sanner, B. Lipphardt +2
Observation of an unexpected negative isotope shift in 229Th+ and its theoretical explanation
M. V. Okhapkin, D. M. Meier, E. Peik +3
Atomic clocks with suppressed blackbody radiation shift
V. I. Yudin, A. V. Taichenachev, M. V. Okhapkin +6
A Cs-Based Optical Frequency Measurement Using Cross-Linked Optical and Microwave Oscillators
Chr. Tamm, N. Huntemann, B. Lipphardt +5
Laser ablation loading of a radiofrequency ion trap
K. Zimmermann, M. V. Okhapkin, O. A. Herrera-Sancho +1
Energy levels of Th+ between 7.3 and 8.3 eV
O. A. Herrera-Sancho, N. Nemitz, M. V. Okhapkin +1
Quantum Physics Exploring Gravity in the Outer Solar System: The Sagas Project
P. Wolf, Ch. J. Bordé, A. Clairon +52
Improved limit on a temporal variation of $m_p/m_e$ from comparisons of Yb$^+$ and Cs atomic clocks
N. Huntemann, B. Lipphardt, Chr. Tamm +3