Team members
Chair
© Prof. Dr. Aparajita Singha
Prof. Dr. Aparajita Singha
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Visiting address:
Recknagelbau, REC C208 Haeckelstraße 3
01069 Dresden
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Prof. Dr. Aparajita Singha verfügt über umfangreiche Forschungserfahrung auf dem Gebiet des Magnetismus niedrig koordinierter Atome und Moleküle mit Hilfe von Rastertunnelmikroskopie und Rasterkraftmikroskopie (STM/AFM) sowie unter Verwendung von zirkularem magnetischen Röntgendichroismus (XMCD). Den Großteil ihrer Promotion (abgeschlossen 2017 an der EPF Lausanne) und ihrer Postdoc-Phase (2017–2018 an der EPF Lausanne und 2018–2019 am QNS in Seoul, Südkorea) widmete sie dem Verständnis komplexer Adatom-Substrat- und Adatom-Adatom-Wechselwirkungen in Lanthanoid-Elektronenspin-Systemen, die maßgeblich zur Entdeckung oberflächengestützter Ein-Atom-Magnete beitrugen. Von 2020 bis 2022 war sie als wissenschaftliche Gruppenleiterin in der Abteilung Nanowissenschaften des Max-Planck-Instituts für Festkörperforschung (MPI-FKF) in Stuttgart tätig. In dieser Zeit entwickelte ihre Forschungsgruppe einen neuen, eigens konzipierten Messaufbau für NV-Magnetometrie zur Durchführung von Quantensensorexperimenten unter Ultrahochvakuumbedingungen und bei Flüssigheliumtemperatur. Ihre Forschungsideen zur Untersuchung von Quantensensorik und kohärenter Spindynamik in niedrig koordinierten oberflächengestützten Systemen wurden 2021 mit einem Stipendium für junge Forscherinnen und Forscher am IQST, 2022 mit dem Nexus-Preis der Carl-Zeiss-Stiftung (später zugunsten des ENP abgelehnt) und 2022 mit der Förderung durch das Emmy-Noether-Programm (ENP) der Deutschen Forschungsgemeinschaft (DFG) ausgezeichnet. Ihre Emmy-Noether-Gruppe ist seit 2022 am MPI-FKF in Stuttgart etabliert. Seit 2025 ist sie Professorin für Nanoskalige Quantenmaterialien am Institut für Festkörper- und Materialphysik. Mit dieser Berufung wurde sie gleichzeitig PI des Exzellenzclusters ct.qmat.
Administrative Assistant
Visiting address:
Recknagelbau, REC C207 Haeckelstraße 3
01069 Dresden
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Technical Assistant
Visiting address:
Recknagelbau, REC C201 Haeckelstraße 3
01069 Dresden
Senior Scientists
Postdoctoral Researchers
Dr. Ricardo Javier Peña Román
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Ricardo Javier Peña Román is a postdoctoral researcher working on the development of advanced quantum sensing techniques based on scanning NV magnetometry. His current research focuses on extending scanning NV magnetometry to ultra-high-vacuum and low-temperature (UHV-LT) conditions through the development of a custom-built scanning microscope for NV-based quantum sensing. His work includes the design and optimization of the experimental platform and measurement protocols, as well as the investigation of magnetic domain textures in synthetic antiferromagnets.
Ricardo received his B.Sc. in Physics from the University of Los Andes (Venezuela) in 2013 and completed his M.Sc. (2018) and Ph.D. (2022) in Physics at the University of Campinas (UNICAMP), Brazil. His doctoral research, complemented by a research stay at Université Paris-Saclay, France, focused on probing the local electronic and optical properties of atomically thin materials using scanning tunnelling luminescence microscopy and spectroscopy. This work led to the development of patented optical instrumentation for scanning tunnelling luminescence experiments, which was licensed and commercialized by RHK Technology as part of the PanScan Lumin-SLT platform.
Before joining TU Dresden in 2025, he was a postdoctoral researcher at the Max Planck Institute for Solid State Research in Stuttgart, Germany, where he specialized in scanning NV magnetometry. Throughout his academic career, he was supported by competitive scholarships, including the Gran Mariscal de Ayacucho Scholarship (Venezuela), a fellowship from the Brazilian National Council for Scientific and Technological Development (CNPq) for his master's studies, and a doctoral fellowship from the São Paulo Research Foundation (FAPESP).
Selected links
- PanScan Lumin-SLT: https://rhk-tech.com/products/panscan-lumin/
- Google Scholar: https://scholar.google.com/citations?user=lYGXLD4AAAAJ
- ORCID: https://orcid.org/0000-0003-4673-1127
Dr. Shirsopratim Chattopadhyay
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Shirso has joined NQM as a postdoctoral researcher from Sept 2025. He completed his PhD in materials science with minor in electrical engineering and computer science from Oregon State university in 2023. At NQM, he will be involved in developing advanced NV-measurement and data analysis methods.
PhD Students
Sandip has completed his BS-MS degree from the Indian Institute of Science Education and Research (IISER), Kolkata, India, in July, 2022. After a short stay as a project student at IISER Kolkata, he has joined the Singha group since Aug 2023 as a PhD student. Since then he has been working on a home-built UHV scanning NV magnetometry setup for exploring magnetic domain textures in complex synthetic antiferromagnets. His projects also involves understanding optical and spin properties of shallow NV sensors in scanning NV probes.
Olga has completed her master's degree in Physics with distinction from St. Petersburg State University in 2022. In her masters thesis project she focused on superconductivity in nanostructured gallium-containing alloys. Her current PhD project involves capturing magnetic signals from isolated as well as low-coordinated molecular spins using near-surface NV-sensors.
Yue has completed his master's degree in Medical Photonics from University of Jena in 2025. Soon after he has joined NQM as a PhD student. He has gained exposure to experimental research with NV-magnetometry, in particular for performing relaxometry measurements of paramagnetic ions. His current PhD project at NQM involves setting up a new room temperature NV-magnetometer and to investigate NV-probes with various surface-functionalization.
Mr Frederik Leon Carstens
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Leon joined NQM as a doctoral candidate in April 2026, shortly after graduating with a M.Sc. in Physics at Heidelberg University. There he was working on bulk magnetic properties and magnetoelastic coupling, primarily of rare-earth containing quantum materials. At TU Dresden, Leon will be involved in a collaboration with Leibniz IFW and MPI-CPfS on topological superconductors.