Physics Colloquium: Prof. Dr. Andreas J. Heinrich - Towards Quantum Computing with Spins on Surfaces
Center for Quantum Nanoscience, Institute for Basic Science (IBS) und Department of Physics, Ewha Womans University, 03760, Republic of Korea.
There is a strong international research effort in the area of quantum information science. Here, the concepts of quantum coherence, superposition and entanglement of quantum states are exploited. These concepts were originally shown with photons as well as atoms and ions in vacuum traps. Over the past two decades, many advances at studying such quantum coherence in solid-state and molecular architectures have evolved.
In this talk we will focus on quantum-coherent experiments in Scanning Tunneling Microscopy (STM). STM enables the study of surfaces with atomic-scale spatial resolution and offers the ability to study individual atoms and molecules on surfaces. Here at Ewha, we have one of the world’s best facilities for such studies. STM can also be used to move atoms with atomic-scale precision, which enables us to build engineered nanostructures where each atom is in the exactly correct place.
In order to study qubits with STM, we recently learned how to combine STM with electron spin resonance. Spin resonance gives us the means to quantum-coherently control an individual atomic or molecular spin on a surface. Using short pulses of microwave radiation further enables us to perform qubit rotations and learn about the quantum coherence times of our spins. Finally, we will finish with unpublished results on multi-qubit operations with spins on surfaces.
Time & Location
Jul 03, 2023 | 04:15 PM
Lecture Hall A (room 1.3.14)
Department of Physics
- Andreas J. Heinrich
- electron spin resonance
- Ewha Womans University
- multi-qubit operations
- quanteum physics
- quantum coherence
- quantum computing
- quantum-coherent experiments
- Scanning Tunneling Microscopy