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Tuesday, September 17, 2019 at 12:20pm
700 Clark Hall
Hosted by Greg Fuchs
The Power of Imperfection: Embracing the Quantum Limit in Semiconductor Devices
Ironically, the same atom-scale defects that are the bane of many electronic devices could be the key to a grand challenge of 21st century science: harnessing the enormous complexity and sensitivity of quantum-coherent systems for practical applications. Certain semiconductor defects exhibit quantum-mechanical features comparable to isolated atoms or molecules, but in room temperature devices amenable to nanofabrication and integration. I will introduce this expanding research field and describe recent progress in identifying, creating, and controlling quantum states using defects in solid-state devices. In particular, I will highlight our group’s work to design new photonic device architectures and quantum control protocols that boost the performance of diamond nitrogen-vacancy centers as quantum memory nodes and nanoscale quantum sensors, and parallel efforts to identify spin-qubit systems in new materials – especially two-dimensional hexagonal boron nitride – that expand the potential for exploring fundamental physical phenomena and designing novel applications.