Michael Wasielewski, Northwestern
4:30pm - 5:30pm
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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.–from M. R. Wasielewski et al. Nature Reviews Chemistry 4, 490–504 (2020).
Hosted by Colin Nuckolls
Thursday, October 8, 2020 at 4:30pm EDT
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