Photogenerated radical pairs as spin qubits: exploiting quantum entanglement of electron spins
| Dates: | 20 January 2021 |
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| Times: | 15:00 - 16:00 |
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| What is it: | Seminar |
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| Organiser: | Photon Science Institute |
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| Who is it for: | University staff, Current University students |
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| Speaker: | Professor Michael R. Wasielewski |
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Join us for this PSI seminar with guest speaker Professor Michael R. Wasielewski.
Ultrafast photodriven electron transfer reactions are used to prepare entangled electron spins having a pure initial spin state, an essential criterion for their use as spin qubits in quantum information applications. For example, we have achieved electron spin state quantum teleportation in an ensemble of covalent donor-acceptor-stable radical molecules. We have also shown that photogenerated radical pairs can be used to implement a two-qubit controlled-NOT (CNOT) gate, which is necessary for developing a complete set of universal quantum logic gates. In addition, we have extended this work to encompass photogenerated radical pairs in synthetic DNA hairpins and CdSe/CdS core/shell quantum dots covalently linked to electron acceptors, which provide new opportunities for creating scalable molecular assemblies. These results show that photochemical electron transfer processes in molecular systems provide an excellent means to understand and manipulate quantum information.
This event will be taking place online and details of how to join this event will be made available shortly.
Speaker
Professor Michael R. Wasielewski
Organisation: Northwestern University
Biography: Michael R. Wasielewski is currently the Clare Hamilton Hall Professor of Chemistry at Northwestern University, Executive Director of the Institute for Sustainability and Energy at Northwestern, and Director of the Center for Molecular Quantum Transduction, a US-DOE Energy Frontier Research Center. He received his B.S., M.S., and Ph.D. degrees from the University of Chicago and was a postdoctoral fellow at Columbia University. His research has resulted in over 700 publications and focuses on light-driven processes in molecules and materials, artificial photosynthesis, molecular electronics, quantum information science, ultrafast optical spectroscopy, and time-resolved electron paramagnetic resonance spectroscopy.
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