52 citations · 115 across the 14 of their papers we have counts for
14 papers
On the potential for high-accuracy spectroscopy of and in Penning traps for a test of CPT invariance
Stephan Schiller, Juan M. Cornejo, Nikita Poljakov +3
The comparison of vibrational transition frequencies of and offers a new opportunity to test CPT invariance. Myers [Phys. Rev. A 98, 01…
A robust method to reach the motional quantum regime of (anti-)protons in cryogenic multi-Penning traps
Nikita Poljakov, Jan Schaper, Julia-Aileen Coenders +5
Sympathetic laser cooling is a key concept in precision spectroscopy and quantum state control of charged particles. Significant challenges arise in the metrologically relevant cas…
Full Single-Quantum Control of Particles in Penning Traps for Symmetry Tests at the Quantum Limit
J. M. Cornejo, J. -A. Coenders, A. Lissel +9
The BASE collaboration aims to measure antimatter systems with the highest precision in order to perform a rigorous test of CPT symmetry and search for physics beyond the Standard…
CERN AD/ELENA Antimatter Program
R. Caravita, A. Cridland Mathad, J. S. Hangst +6
The CERN AD/ELENA Antimatter program studies the fundamental charge, parity, time (CPT) reversal invariance through high-precision studies of antiprotons, antihydrogen, and antipro…
Precision spectroscopy on Be overcomes limitations from nuclear structure
Stefan Dickopf, Bastian Sikora, Annabelle Kaiser +7
Many powerful tests of the Standard Model of particle physics and searches for new physics with precision atomic spectroscopy are plagued by our lack of knowledge of nuclear proper…
Orders of Magnitude Improved Cyclotron-Mode Cooling for Non-Destructive Spin Quantum Transition Spectroscopy with Single Trapped Antiprotons
B. M. Latacz, M. Fleck, J. I. Jaeger +21
We demonstrate efficient sub-thermal cooling of the modified cyclotron mode of a single trapped antiproton and reach particle temperatures below mK in p…
Resolved-sideband cooling of a single Be ion in a Penning trap
Juan M. Cornejo, Johannes Brombacher, Julia A. Coenders +5
Manipulating individual trapped ions at the single quantum level has become standard practice in radio-frequency ion traps, enabling applications from quantum information processin…
Image-current mediated sympathetic laser cooling of a single proton in a Penning trap down to 170 mK axial temperature
C. Will, M. Wiesinger, P. Micke +22
We demonstrate a new temperature record for image-current mediated sympathetic cooling of a single proton in a cryogenic Penning trap by laser-cooled Be. An axial mode temp…
Fast adiabatic transport of single laser-cooled Be ions in a cryogenic Penning trap stack
T. Meiners, J. -A. Coenders, J. Mielke +4
High precision mass and -factor measurements in Penning traps have enabled groundbreaking tests of fundamental physics. The most advanced setups use multi-trap methods, which em…
Optical stimulated-Raman sideband spectroscopy of a single Be ion in a Penning trap
J. M. Cornejo, J. Brombacher, J. -A. Coenders +5
We demonstrate optical sideband spectroscopy of a single Be ion in a cryogenic 5 Tesla Penning trap using two-photon stimulated-Raman transitions between the two Zeeman sub…
Direct measurement of the He magnetic moments
A. Schneider, B. Sikora, S. Dickopf +10
Helium-3 has nowadays become one of the most important candidates for studies in fundamental physics [1, 2, 3], nuclear and atomic structure [4, 5], magnetometry and metrology [6]…
Towards Sympathetic Laser Cooling and Detection of Single (Anti-)Proton
T. Meiners, M. Niemann, A. -G. Paschke +8
Current experimental efforts to test the fundamental CPT symmetry with single (anti-)protons are progressing at a rapid pace but are hurt by the nonzero temperature of particles an…
139 GHz UV phase-locked Raman laser system for thermometry and sideband cooling of Be ions in a Penning trap
Johannes Mielke, Julian Pick, Julia A. Coenders +5
We demonstrate phase locking of two ultraviolet laser sources by modulating a fundamental infrared laser with 4th-order sidebands using an electro-optic modulator and phase locking…
Cryogenic Be Penning trap for precision measurements with (anti-)protons
Malte Niemann, Teresa Meiners, Johannes Mielke +4
Cooling and detection schemes using laser cooling and methods of quantum logic can contribute to high precision CPT symmetry tests in the baryonic sector. This work introduces an e…