Celsiusföreläsare

CELSIUS LECTURE

Diamond quantum sensors for biomedical applications

Spin qubits in diamond have recently emerged as promising candidates for quantum technologies. In this talk, we will demonstrate how single nitrogen-vacancy (NV) colour centres can be employed as nanoscale magnetic field sensors. We will also present dynamical decoupling techniques that enhance the sensitivity of diamond quantum sensors and explore the applications of NV spin qubits for single-molecule nuclear magnetic resonance. We will also show how diamond nanoparticles doped with colour centres can be employed as nanoscale thermometers in living cells. We will demonstrate how nuclear spins in diamond nanoparticles can be hyperpolarised via NV centres and employed as markers for ultrasensitive MRI.

Professor Fedor Jelezko

Fedor Jelezko is currently a director of the Institute of Quantum Optics at Ulm University, director of the Centre for Integrated Quantum Science and Technology and member of Heidelberg Academy of Sciences.

He studied in Minsk (Belarus) and received his Ph.D. in 1998. After finishing the habilitation in 2010 at Stuttgart University he was appointed as a professor of experimental physics in Ulm in 2011. His research interests are at the intersection of fundamental quantum science and quantum technologies. His research team is exploring applications of spin qubits in diamond for information processing, communication, sensing, and imaging

Outside academia, he is involved in the development of quantum technologies based on spin qubits. Prof. Jelezko and his colleagues are now pursuing its exploitation by means of their start-up company NVision Imaging Technologies GmbH and Diatope GmbH.

Symposia Lecture: Ångström Matter for Quantum Technology

The first quantum revolution is at the very foundation of modern computing, communication, and artificial intelligence, beginning with the inception of quantum physics and its application to fundamental inventions such as the transistor, lasers, magnetic resonance imaging, and magnetoresistive memory. Central to the second quantum revolution is the coherent control and entanglement of individual quantum states, which are expected to enable quantum computing, sensing, and communication. For these emerging technologies, atomic-scale materials provide a natural route toward the ultimate limit of miniaturization, with dimensions of a few Ångström, enabling devices and experiments that allow access to quantum phenomena and states of quantum matter that were previously inconceivable. In this talk, I will give an overview of our experiments with atomically thin materials to harness the quantum degrees of freedom ‘spin’, the smallest magnetic unit that gives rise to magnetism in materials. Examples include generating efficient spin currents, harnessing ultrafast spin currents to fundamentally alter magnetic speeds, and developing new systems for reliable quantum control of individual spins.

Associated Professor Venkata Kamalakar Mutta

Dr. Venkata Kamalakar Mutta is an Associate Professor in Quantum Technology at the Department of Physics and Astronomy, Uppsala University. He is the team leader of the Quantum Material Devices Group and the coordinator of the Quantum Technology Master’s Programme. He earned his master's and PhD at the S. N. Bose National Centre for Basic Sciences in India, where his thesis work focused on electron transport in magnetic nanowires (2010). Following his PhD, he held research positions at the University of Strasbourg, France, and Chalmers University of Technology, Sweden, investigating nanoelectronic and spintronic devices based on low-dimensional systems, particularly atomically thin materials such as graphene and other two-dimensional crystals, as well as their van der Waals heterostructures. In 2015, he joined Uppsala University, where he established a new research activity on quantum materials devices and built the quantum device laboratory from scratch, initially with a VR Starting Grant, followed by an ERC Consolidator Grant in 2020 and funding from the Knut and Alice Wallenberg Foundation in 2022. Currently, his team explores quantum dynamics, communication, and ordering phenomena in charge, spin, and orbital degrees of freedom for quantum sensing. The work focuses on developing devices based on atomic-scale systems, advanced nanofabrication, and low-temperature magneto-transport and magneto-optic measurement techniques. Furthermore, his group employs large-scale synchrotron facilities for in-operando investigations of devices. In 2021, he received the Thuréus Prize from the Royal Scientific Society in Uppsala for internationally acclaimed research on spin currents in graphene and other low-dimensional materials. He has been an elected member of the board of the Condensed Matter Division of the European Physical Society since 2022.