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iOptics Seminar: Frederic Grillot

Event Type
iOptics at Illinois
Beckman Institute Room 3269 (3rd Floor Tower Room)
Nov 2, 2023   11:00 am  
Frederic Grillot, Research Professor, Center for High Technology Materials, University of New Mexico, Albuquerque, NM. and Professor, Télécom Paris, Palaiseau, FR.
Alexander Ho

Title: "Semiconductor Quantum Dots: Genesis, prospects & challenges."

Semiconductor nanostructures with low dimensionality like quantum dots are one the most attractive solutions for achieving high performance photonic devices. Quantum dots are currently experiencing a second revolution, thanks to their very high potential for silicon photonics & quantum technologies. When one or more spatial dimensions of the nanocrystal approach the de Broglie wavelength, nanoscale size effects create a spatial quantization of carriers along with various other phenomena based on quantum mechanics. Thanks to their compactness, great thermal stability, and large reflection immunity, semiconductor quantum dot lasers are very promising candidates for low energy consumption and isolation free photonic integrated circuits. When directly grown on silicon, they even show a four-wave mixing efficiency much superior compared to the conventional quantum well devices. This remarkable result paves the way for achieving high-efficiency frequency comb generation from a photonic chip. Quantum dot lasers also exhibit a strong potential for applications in optical routing and optical atomic clocks. Finally, a quantum dot single photon source is a building block in secure communications, and therefore can be applied to quantum information processing for applications such as quantum computers. Dr. Grillot will review the recent findings and prospects on nanostructure based light emitters made with quantum-dot technology. Many applications ranging from silicon-based integrated solutions to quantum information systems will be presented. In addition, Dr. Grillot will strongly highlight the importance of nanotechnologies in industry and society. Especially for shaping the future information and communication society.


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