Diamond Defects Unlock Quantum Computing Breakthroughs
Researchers from the University of Stuttgart and HZB have independently developed innovative methods to read quantum information from diamond defects. These breakthroughs could revolutionize quantum computing and sensing in the United States and beyond.
The Stuttgart team employed Kelvin probe force microscopy (KPFM), a variant of atomic force microscopy, to manipulate and read spin states via microwave excitation. This new method captures spin dynamics without the need for optical measurements, storing quantum information in the electron spin state of the defects.
Meanwhile, the HZB team developed a technique that uses photovoltage generated by the electron spin state of NV centers in diamonds. This method, which could also be applied to other solid-state physics systems with spin defects, offers a simpler and more cost-effective alternative to current optical readout methods.
These advancements pave the way for more compact quantum sensors and potentially cheaper quantum computers. By harnessing diamond defects, researchers are unlocking new possibilities in quantum technologies across the USA.
