A5011238831- Cold Atom Physics and Bose-Einstein Condensates
- Advanced Frequency and Time Standards
- Atomic and Molecular Physics
- Orbital Angular Momentum in Optics
- Experimental and Theoretical Physics Studies
- Advanced Fiber Laser Technologies
- Scientific Measurement and Uncertainty Evaluation
- Quantum optics and atomic interactions
- Atomic and Subatomic Physics Research
- Analytical Chemistry and Sensors
- Mechanical and Optical Resonators
- Quantum, superfluid, helium dynamics
- Mass Spectrometry Techniques and Applications
- Laser-Matter Interactions and Applications
- Microfluidic and Bio-sensing Technologies
Physikalisch-Technische Bundesanstalt
2015-2021
Wuhan Institute of Physics and Mathematics
2021
Chinese Academy of Sciences
2021
Universität Innsbruck
2019-2020
Max Planck Institute for Nuclear Physics
2013-2020
Control over the motional degrees of freedom atoms, ions, and molecules in a field-free environment enables unrivalled measurement accuracies but has yet to be applied highly charged ions (HCIs), which are particular interest future atomic clock designs searches for physics beyond Standard Model. Here, we report on Coulomb crystallization HCIs (specifically (40)Ar(13+)) produced an electron beam ion trap retrapped cryogenic linear radiofrequency by means sympathetic cooling through...
Mechanical oscillators based on levitated particles are promising candidates for sensitive detectors and platforms testing fundamental physics. The targeted quality factors such correspond to extremely low damping rates of the center-of-mass motion, which can only be obtained if trapped in ultrahigh vacuum (UHV). In order reach pressures, a noncontaminating method loading UHV environment is necessary. However, particle traps at pressures below viscous flow regime challenging due conservative...
In vacuo cryogenic environments are ideal for applications requiring both low temperatures and extremely particle densities. This enables reaching long storage coherence times, example, in ion traps, essential requirements experiments with highly charged ions, quantum computation, optical clocks. We have developed a novel cryostat continuously refrigerated pulse-tube cryocooler providing the lowest vibration level reported such closed-cycle system 1 W cooling power <5 K experiment. A...
Preparing highly charged ions (HCIs) in a cold and strongly localized state is of particular interest for frequency metrology tests possible spatial temporal variations the fine structure constant. Our versatile preparation technique based on generic modular combination pulsed ion source with cryogenic linear Paul trap. Both instruments are connected by compact beamline deceleration precooling properties. We present its design commissioning experiments regarding these two functionalities. A...
Sympathetic Coulomb crystallization of highly charged ions, retrapped in a cryogenic radiofrequency trap, is demonstrated by an over seven orders-of-magnitude decrease motional temperature.
We present a novel ultrastable superconducting radio-frequency (RF) ion trap realized as combination of an RF cavity and linear Paul trap. Its quadrupole mode at 34.52 MHz reaches quality factor $Q\approx2.3\times 10^5$ temperature 4.1 K is used to radially confine ions in ultralow-noise pseudopotential. This concept expected strongly suppress motional heating rates related frequency shifts which limit the ultimate accuracy achieved advanced traps for metrology. Running with its...
Views Icon Article contents Figures & tables Video Audio Supplementary Data Peer Review Share Twitter Facebook Reddit LinkedIn Tools Reprints and Permissions Cite Search Site Citation A. Windberger, M. Schwarz, O. Versolato, T. Baumann, H. Bekker, L. Schmöger, K. Hansen, D. Gingell, Klosowski, S. Kristensen, P. Schmidt, J. Ullrich, Drewsen, R. Crespo López-Urrutia; Coulomb crystals in a cryogenic Paul trap for sympathetic cooling of molecular ions highly charged ions. AIP Conf. Proc. 19...
Abstract Ultrapräzise Spektroskopie kalter, einfach geladener Ionen ist seit einiger Zeit möglich.Unserer Kollaboration vom Max‐Planck‐Institut für Kernphysik in Heidelberg und der PTB Braunschweig nun erstmalig die Präparation ultrakalter hochgeladener einer Radiofrequenz‐Falle gelungen. Diese neue Technik erlaubt Anwendung hochpräziser Laserspektroskopie auf diese interessante, artenreiche Klasse atomarer Systeme, bisher gängigen Untersuchungsmethoden nicht zugänglich war.