ELECTRON DEVICES SOCIETY (IEEE-EDS) ACTIVITIES Dr. Varonides & students, Phys/Eng. Dept., guest speaker/nano devices Thurs, Nov 20
ELECTRON DEVICES SOCIETY (IEEE-EDS) ACTIVITIES Dr. Varonides & students, Phys/Eng. Dept., guest speaker/nano devices Thurs, Nov 20
We study the coherent dynamics of a double quantum dot (DQD) system—two tiny semiconductor “boxes” that can each hold a single electron—embedded in the channel of a field-effect transistor. When one electron is shared between the two dots, the system can form a Bell state, a special type of quantum entanglement where the electron has no definite location but exists as a superposition of being in either dot. We model how this entangled state evolves in time when the two dots are tunnel-coupled to each other and also connected to Majorana zero modes (MZMs) located at the ends of a topological superconducting nanowire.
Our simulations show oscillatory exchange of population between the two dots and long-lived coherence even when the MZMs are strongly coupled. A small portion of the amplitude leaks into the Majorana channel, but instead of destroying entanglement, it shares coherence between the DQD and the MZMs. These results point to new ways of protecting and controlling quantum information in solid-state devices.
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- University of Scranton
- 204 Monroe Ave
- Scranton, Pennsylvania
- United States 18510
- Building: LSC, Loyola Science Center, University of Scranton
- Room Number: 334
- Starts 25 September 2025 04:00 AM UTC
- Ends 20 November 2025 05:00 AM UTC
- No Admission Charge