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Duke Physics Colloquium: A Quantum Architecture Based on Trapped Ions

Jan 20

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Wednesday, January 20, 2021 - 3:30pm to 4:30pm


Norbert Linke (University of Maryland)

"A Quantum Architecture Based on Trapped Ions" Trapped ions give us a high degree of detailed control of their quantum degrees of freedom, which has enabled a large number of experiments in quantum optics, quantum computing, simulation and networking as well as precision metrology and others. We present a quantum architecture comprised of a linear chain of trapped 171 Yb+ ions with individual laser beam addressing and readout. The collective modes of motion in the chain are used to efficiently produce entangling gates between any qubit pair. In combination with a classical software stack, this becomes in effect an arbitrarily programmable fully connected quantum computer. Over the past five years, we have employed this experiment to demonstrate a variety of quantum algorithms with the help of a community of academic partners, including cross hardware comparisons with commercially developed systems and digital quantum simulations. We also use the same level of control to study interesting quantum phenomena using the motional degrees of freedom directly, such as exotic para particles and Hubbard models of phonons. This talk will give recent highlights from both of these approaches and discuss improvements in trap technology for scaling up as well as other ideas for the future. Please join via Zoom link. Contact Cristin Ryman with any questions.