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Symposium EL10: Understanding the Inorganic-Organic Interface—The Case of Colloidal Nanoscale Materials

Moungi Bawendi, Massachusetts Institute of Technology

Indistinguishable Single Photons from Colloidal Quantum Dots

Written by Birgul Akolpoglu

Moungi Bawendi, recipient of the 2023 Nobel Prize in Chemistry for his groundbreaking work on quantum dots, shared insights into his latest research on indistinguishable single photons. Having received the prestigious prize only last month, he was very humbled, and he attributed the prize to his scientific community and dedicated research group, emphasizing their three decades of hard work in the field of quantum dots. Bawendi marveled at the ever-expanding applications of quantum dot technology, from light-emitting diode displays to lasers and solar cells.

 

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Acknowledging the diverse background of his audience, Bawendi transitioned to foundational concepts, illustrating the famous double-slit electron experiment. This experiment highlights the dual nature of particles, exhibiting both wave-like and particle-like behavior. He then moved on to discuss the Hong-Ou-Mandel (HOM) effect in quantum optics, elucidating how indistinguishable photons become entangled at a beam splitter, consistently emerging together in one of the output ports.

Concluding his talk, Bawendi outlined future directions and open questions in colloidal quantum dots research. These include exploring exciton dephasing, optimizing synthetic design for enhanced performance, and advancing the fundamental understanding of structure-function relationships. His group at the Massachusetts Institute of Technology is actively engaged in a broad spectrum of topics, from nanomaterials synthesis, and spectroscopy to various applications in bioimaging and solar energy harvesting.

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