26 citations · 102 across the 15 of their papers we have counts for
15 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…
Free five-valued Nelson Algebras
Juan Manuel Cornejo, Andrés Gallardo, Luiz F. Monteiro +1
Five-valued Nelson algebras are those satisfying the condition: . We give alternative equations defining these algebras, and determine…
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…
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…
Towards Sympathetic Cooling of Single (Anti-)Protons
T. Meiners, M. Niemann, J. Mielke +5
We present methods to manipulate and detect the motional state and the spin state of a single antiproton or proton which are currently under development within the BASE (Baryon Ant…
Cryogenic Penning-Trap Apparatus for Precision Experiments with Sympathetically Cooled (anti)protons
M. Niemann, T. Meiners, J. Mielke +17
Current precision experiments with single (anti)protons to test CPT symmetry progress at a rapid pace, but are complicated by the need to cool particles to sub-thermal energies. We…
Quantum logic inspired techniques for spacetime-symmetry tests with (anti-)protons
Juan M. Cornejo, Ralf Lehnert, Malte Niemann +9
Cosmological observations as well as theoretical approaches to physics beyond the Standard Model provide strong motivations for experimental tests of fundamental symmetries, such a…
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…
Elementary laser-less quantum logic operations with (anti-)protons in Penning traps
Diana Nitzschke, Marius Schulte, Malte Niemann +5
Static magnetic field gradients superimposed on the electromagnetic trapping potential of a Penning trap can be used to implement laser-less spin-motion couplings that allow the re…
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…
The TRAPSENSOR Facility: an Open-Ring 7-Tesla Penning Trap for Laser-Based Precision Experiments
Manuel J. Gutiérrez, Joaquín Berrocal, Juan Manuel Cornejo +12
The Penning-trap electronic-detection technique that offers the precision and sensitivity requested in mass spectrometry for fundamental studies in nuclear and particle physics has…
Motional studies of one and two laser-cooled trapped ions for electric-field sensing applications
Francisco Domínguez, Manuel Jesús Gutiérrez, Íñigo Arrazola +7
We have studied the dynamics of one and two laser-cooled trapped Ca ions by applying electric fields of different nature along the axial direction of the trap, namely, d…
Extending the applicability of an open-ring trap to perform experiments with a single laser-cooled ion
J. M. Cornejo, M. Colombano, J. Doménech +3
An open-ring ion trap, also referred to as transparent trap was initially built up to perform - correlation experiments with radioactive ions. This trap geometry is also well…