University of Birmingham > Talks@bham > Metamaterials Research Group Seminars > Quantum dots for THz technology

Quantum dots for THz technology

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If you have a question about this talk, please contact Dr Miguel Navarro-Cia.

Terahertz (THz) radiation is extremely appealing for fundamental investigations of matter and emerging applications, such as security screening, medical imaging, astrophysics and atmospheric science. However, the THz spectral range remains under-developed mainly due to the lack of compact and efficient sources and detectors. To support the development of THz technology, major efforts are underway to explore new physical effects in materials. Due to their unique optical and electrical properties that are directly related to their nanoscale structures, quantum dots are promising candidates for the development of THz quantum devices as high sensitivity detectors, lasers and single photon emitters. This talk will focus on the potential of large graphene quantum dots and large HgTe nanocrystals for the development of advanced THz devices. I will first present the THz properties of large graphene quantum dots, the recent technological developments for their fabrication and their quantum response to THz illumination. Then I will present the THz properties of large HgTe nanocrystals and the dynamics of hot carriers in these HgTe quantum dots.

This talk is part of the Metamaterials Research Group Seminars series.

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