159 citations · 2.7k across the 90 of their papers we have counts for
95 papers
Solid-state nuclear magnetic resonance search for axion-like dark matter with broadband SQUID magnetometry
Andrew J. Winter, János Ádám, Deniz Aybas +5
We report the results of an experimental search for ultralight axion-like dark matter in the mass ranges 19.5--20.5 and 21.5--22 neV. The Cosmic Axion Spin Precession Experiment-el…
Control of relaxation properties of a macroscopic nuclear spin ensemble
János Ádám, Andrew J. Winter, Deniz Aybas +4
Macroscopic spin ensembles in solids are powerful platforms for quantum sensing and precision metrology. A key challenge is controlling the nuclear spin population relaxation time…
Floquet engineering of spin-spin interactions in a hybrid atomic system
Daniel Gavilan-Martin, Grzegorz Łukasiewicz, Vincent Schäfer +8
We demonstrate dynamical control of the effective spin-spin interaction, dominated by Fermi-contact interaction, in a hybrid spin system via parametric modulation. We show that, in…
Magnetic Microscopy of Skyrmions in Magnetic Thin Films with Chiral Overlayers
Buddhika Hondamuni, Théo Balland, Fabian Kammerbauer +15
Topologically nontrivial magnetic textures such as skyrmions offer promising opportunities for spintronic applications. In recent years, it has been shown that the magnetic propert…
First Axion Search Results of the SUPAX Prototype Experiment
Tim Schneemann, Hendrik Bekker, Dmitry Budker +4
The SUPerconduction AXion search experiment (Supax) is a future haloscope-type detector designed to probe axion-like particles (ALPs) as candidates for dark matter and solutions to…
Black hole scalar sirens in the Milky Way
Daniel Gavilan-Martin, Olivier Simon, Dhashin Krishna +3
Hypothetical light scalar particles trigger the superradiant instability around spinning black holes (BHs), causing clouds of scalars to grow around the BH. In the presence of suff…
Cavity, lumped-circuit, and spin-based detection of axion dark matter: differences and similarities
Deniz Aybas, Hendrik Bekker, Dmitry Budker +12
Axions and axion-like particles are compelling candidates for ultralight bosonic dark matter, forming coherent oscillating fields that can be probed by experiments known as halosco…
Human Cardiac Measurements with Diamond Magnetometers
Muhib Omar, Magnus Benke, Shaowen Zhang +27
We demonstrate direct, non-invasive and non-contact detection of human cardiac magnetic signals using quantum sensors based on nitrogen-vacancy (NV) centers in diamond. Three confi…
Zero- to low-field J-spectroscopy with a diamond magnetometer
Muhib Omar, Jingyan Xu, Raphael Kircher +8
We report measurements of zero- to ultra-low-field nuclear magnetic resonance (ZULF NMR) signals at frequencies of a few hertz with a diamond-based magnetic sensor. The sensing dia…
Microwave-free vector magnetometry and crystal orientation determination with Nitrogen-Vacancy centers using Bayesian inference
Hilario Espinós, Omkar Dhungel, Arne Wickenbrock +3
Nitrogen-vacancy (NV) centers in diamond provide a solid-state platform for quantum sensing. While optically detected magnetic resonance techniques offer high sensitivity, their re…
Search for a solar-bound axion halo using the Global Network of Optical Magnetometers for Exotic physics searches
Tatum Z. Wilson, Derek F. Jackson Kimball, Samer Afach +50
We report on a search for a gravitationally bound solar axion halo using data from the Global Network of Optical Magnetometers for Exotic physics searches (GNOME), a worldwide arra…
Low-field all-optical detection of superconductivity using NV nanodiamonds
Omkar Dhungel, Saravanan Sengottuvel, Mariusz Mrozek +5
Nitrogen-vacancy centers in nanodiamond offer a microwave-free, noninvasive platform for probing superconductors via near zero-field cross-relaxation magnetometry. We demonstrate t…
The QTF-Backbone: Proposal for a Nationwide Optical Fibre Backbone in Germany for Quantum Technology and Time and Frequency Metrology
Tara Cubel Liebisch, Peter Kaufmann, Harald Schnatz +166
The recent breakthroughs in the distribution of quantum information and high-precision time and frequency (T&F) signals over long-haul optical fibre networks have transformative po…
Notes on optimizing a multi-sensor gradient axion-like particle dark matter search
Daniel Gavilan-Martin, Grzegorz Łukasiewicz, Derek F. Jackson Kimball +3
Axion-like particles (ALPs) arise from well-motivated extensions to the Standard Model and could account for the dark matter. We discuss the scaling of the sensitivity of a galacti…
Search for Axionlike Dark Matter Using Liquid-State Nuclear Magnetic Resonance
Julian Walter, Olympia Maliaka, Yuzhe Zhang +13
We search for dark matter in the form of axionlike particles (ALPs) in the mass range - by probing their possible couplin…
Study of NbN as superconducting material for the usage in superconducting radio frequency cavities
Kristof Schmieden, Tim Schneemann, Matthias Schott +4
A new axion-haloscope is setup at the Johannes Gutenberg university of Mainz, named the Supax (a SUPerconducting AXion search) experiment. This setup is used to characterize the be…
Towards high-sensitivity magnetometry with nitrogen vacancy centers in diamond using the singlet infrared absorption
Ali Tayefeh Younesi, Muhib Omar, Arne Wickenbrock +2
The negatively-charged nitrogen vacancy (NV) center in diamond is widely used for quantum sensing since the sensitivity of the spin triplet in the electronic ground state to…
Temperature shift of magnetic-field-dependent photoluminescence features of nitrogen-vacancy ensembles in diamond
Irena Rodzoń, Xue Zhang, Viktor Ivády +3
Recently significant attention has been paid to magnetic-field-dependent photoluminescence (PL) features of the negatively charged nitrogen-vacancy (NV) centers in diamond. These f…
Microwave-free imaging magnetometry with nitrogen-vacancy centers in nanodiamonds at near-zero field
Saravanan Sengottuvel, Omkar Dhungel, Mariusz Mrózek +4
Magnetometry using Nitrogen-Vacancy (NV) color centers in diamond predominantly relies on microwave spectroscopy. However, microwaves may hinder certain studies involving biologica…
Searching for dark matter with a 1000 km baseline interferometer
Daniel Gavilan-Martin, Grzegorz Lukasiewicz, Mikhail Padniuk +8
Axion-like particles (ALPs) arise from well-motivated extensions to the Standard Model and could account for dark matter. ALP dark matter would manifest as a field oscillating at a…
A Multi-Messenger Search for Exotic Field Emission with a Global Magnetometer Network
Sami S. Khamis, Ibrahim A. Sulai, Paul Hamilton +38
Quantum sensor networks in combination with traditional astronomical observations are emerging as a novel modality for multi-messenger astronomy. Here we develop a generic analysis…
Near-zero-field microwave-free magnetometry with nitrogen-vacancy centers in nanodiamonds
Omkar Dhungel, Mariusz Mrózek, Till Lenz +6
We study the fluorescence of nanodiamond ensembles as a function of static external magnetic field and observe characteristic dip features close to the zero field with potential fo…
Microwave-free wide-field magnetometry using nitrogen-vacancy centers
Joseph Shaji Rebeirro, Muhib Omar, Till Lenz +4
A wide-field magnetometer utilizing nitrogen-vacancy (NV) centers in diamond that does not require microwaves is demonstrated. It is designed for applications where microwaves need…
Universal determination of comagnetometer response to spin couplings
Mikhail Padniuk, Emmanuel Klinger, Grzegorz Lukasiewicz +6
We propose and demonstrate a general method to calibrate the frequency-dependent response of self-compensating noble-gas-alkali-metal comagnetometers to arbitrary spin perturbation…