Quantum Sensing

Measurements of magnetic properties on the atomic scale require a sensor with the intrinsic sensitivity for single spin detection, a size comparable to systems under investigation, and the capability for measurements without strongly influencing the spin properties of the studied systems. We delve into such quantum sensing experiments by exploiting two different techniques, which are electron spin resonance spectroscopy combined with scanning tunneling spectroscopy as well as nitrogen-vacancy (NV) center spectroscopy. The activities involving NV-center spectroscopy have moved with A. Singha to the TU Dresden.

Responsible Scientists

Dr. Christian Ast (webpage)

Dr. Paolo Sessi

Team Members

Maneesha Ismail, Soumyaranjan Jhankar, David Sousa

Key Publications

Christian R. Ast, Piotr Kot, Maneesha Ismail, Sebastián de-la-Peña, Antonio I. Fernández-Domínguez, Juan Carlos Cuevas
Theory of electron spin resonance in scanning tunneling microscopy
Physical Review Research 6, 023126 (2024)
Article

Piotr Kot, Maneesha Ismail, Robert Drost, Janis Siebrecht, Haonan Huang, and Christian R. Ast 
Electric Control of Spin transitions at the atomic scale
Nature Communications 14, 6612 (2023)
Article

Jeffrey Neethi Neethirajan, Toni Hache, Domenico Paone, Dinesh Pinto, Andrej Denisenko, Rainer Stöhr, Péter Udvarhelyi, Anton Pershin, Adam Gali, Joerg Wrachtrup, Klaus Kern, and Aparajita Singha
Controlled Surface Modification to Revive Shallow NV– Centers
Nano Lett. 23, 2563 (2023) DOI: 10.1021/acs.nanolett.2c04733
Article

D. Paone, D. Pinto, G. Kim, L. Feng, M-J. Kim, R. Stöhr, A. Singha, S. Kaiser, G.Logvenov, B. Keimer, J. Wrachtrup, and K. Kern
All-Optical and Microwave-Free Detection of Meissner Screening using Nitrogen-Vacancy Centers in Diamond
J. of Appl. Phys. 129, 024306 (2021) DOI: 10.1063/5.0037414
Article