154 citations · 435 across the 9 of their papers we have counts for
9 papers
An Optical Atomic Clock Based on a Highly Charged Ion
Steven A. King, Lukas J. Spieß, Peter Micke +9
Optical atomic clocks are the most accurate measurement devices ever constructed and have found many applications in fundamental science and technology. The use of highly charged i…
Two-color grating magneto-optical trap for narrow-line laser cooling
Saskia Bondza, Christian Lisdat, Stefanie Kroker +1
We demonstrate for the first time the two-color cooling and trapping of alkaline-earth atoms in a grating magneto-optical trap (gMOT). The trap is formed by a single incident laser…
Algorithmic Ground-state Cooling of Weakly-Coupled Oscillators using Quantum Logic
Steven A. King, Lukas J. Spieß, Peter Micke +4
Most ions lack the fast, cycling transitions that are necessary for direct laser cooling. In most cases, they can still be cooled sympathetically through their Coulomb interaction…
An ultralow-noise superconducting radio-frequency ion trap for frequency metrology with highly charged ions
J. Stark, C. Warnecke, S. Bogen +17
We present a novel ultrastable superconducting radio-frequency (RF) ion trap realized as a combination of an RF cavity and a linear Paul trap. Its RF quadrupole mode at 34.52 MHz r…
Coherent laser spectroscopy of highly charged ions using quantum logic
P. Micke, T. Leopold, S. A. King +6
Precision spectroscopy of atomic systems is an invaluable tool for the advancement of our understanding of fundamental interactions and symmetries. Recently, highly charged ions (H…
Closed-cycle, low-vibration 4 K cryostat for ion traps and other applications
P. Micke, J. Stark, S. A. King +7
In-vacuo cryogenic environments are ideal for applications requiring both low temperatures and extremely low particle densities. This enables reaching long storage and coherence ti…
A cryogenic radio-frequency ion trap for quantum logic spectroscopy of highly charged ions
Tobias Leopold, Steven A. King, Peter Micke +5
A cryogenic radio-frequency ion trap system designed for quantum logic spectroscopy of highly charged ions is presented. It includes a segmented linear Paul trap, an in-vacuum imag…
A self-injection locked DBR laser for laser cooling of beryllium ions
Steven A. King, Tobias Leopold, Premjith Thekkeppatt +1
We present a simple, robust, narrow-linewidth, frequency-doubled semiconductor laser source suitable for laser cooling and repumping of Be ions. A distributed Bragg reflect…
A tunable low-drift laser stabilized to an atomic reference
Tobias Leopold, Lisa Schmöger, Stefanie Feuchtenbeiner +6
We present a laser system with a linewidth and long-term frequency stability at the 50 kHz level. It is based on a Ti:Sapphire laser emitting radiation at 882 nm which is reference…