Seyed Sadeghi
University of Alabama in Huntsville, AL·Physics
Quantum technologies need ways to create, store and read out fragile quantum states. Transition metal dichalcogenides (TMDs) are semiconductors only one atom-layer thick, and light can put them into specific quantum states.
- Fields
Physics
Materials Science
Engineering
- Topics
transition metal dichalcogenides
2D materials
plasmonics
- Grants
- 1 known grant, through Aug 2027
What they work on
- Develop an in-vacuum atomic layer deposition system with in-situ characterization tools to fabricate defect-free oxide/gold Schottky junctions thinner than 2 nm that capture hot electrons without scattering.
- Build field-effect transistors from transition metal dichalcogenide monolayers, ultrathin oxides and gold nanoantennas that convert plasmon-decay hot electrons into an electronic readout of spin-valley quantum states.
- Encode quantum information in time-varying hot-electron currents through spin-valley exciton-plasmon coupling, then decode it by analyzing current dynamics and mapping state evolution on the Bloch sphere.
More about the research
These states decay extremely fast, however, and reading them out without disturbing them is hard. This collaborative project proposes to use those fast decay processes, rather than fight them, to read quantum information electronically and to encode and encrypt information.
Why it matters
Quantum devices could support secure encryption of optical information, coherent energy and information transport, and nanosensors that may detect single biological molecules and their structural features. Reading quantum states through ordinary transistor currents could make these technologies easier to build with existing electronics, which could benefit device engineers and the quantum information field.
Known grants
From NIH and NSF research grants. Labs often have other funding we can't see.
Closest labs
Leonid Butov
University of California-San Diego, CA·Physics
Study spin transport carried by indirect excitons, electron-hole pairs split across separate semiconductor layers, using optical measurements in layered heterostructures.
Wanyi Nie
University at Buffalo, NY·Materials Science
Grow and characterize heterostructures of chiral hybrid perovskites and 2D transition metal dichalcogenides to study interlayer excitons, electron–hole pairs spanning the interface.
You Zhou
University of Maryland, MD·Physics·Early-career
Fabricate coupled bilayers of transition metal dichalcogenide semiconductors and test how their atomic structure and stacking affect the stability of Wigner crystals, ordered patterns of electrons.
The school
University of Alabama in Huntsville: 4 labs on PI Pages, $154M a year on research, 45 research doctorates a year.
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