Twisted particles carry Orbital Angular Momentum (OAM), an important property
utilized to encode quantum information. The OAM of twisted photons can be trans-
ferred onto condensed matter systems in the form of twisted excitons. Numerical
solutions of the time-dependent Schr ̈odinger equation for a 3-arm molecular chain are
used to demonstrate the manipulation of twisted excitons via an external magnetic
field. We present the first design for an OAM transistor in a quasi-1D system that
can be used to control the flow of OAM using the magnetic field. The underlying
mechanism is the interaction between OAM and the magnetic field which leads to a
orbit-resolved Bloch oscillation (ORBO). We present the semi-classical equations of
motion for this phenomenon in a one-dimensional system. Unlike classical Bloch oscil-
lation, an important effect in ultrafast electron dynamics, the magnet driven ORBO
is not limited by electrical breakdown and can easily be observed in natural solids.
| Identifer | oai:union.ndltd.org:kaust.edu.sa/oai:repository.kaust.edu.sa:10754/678489 |
| Date | 02 June 2022 |
| Creators | Bawazir, Abdullah |
| Contributors | Schwingenschlögl, Udo, Physical Science and Engineering (PSE) Division, Fatayer, Shadi P., Bagci, Hakan, Zang, Xiaoning, Laquai, Frédéric |
| Source Sets | King Abdullah University of Science and Technology |
| Language | English |
| Detected Language | English |
| Type | Thesis |
| Rights | 2023-06-02, At the time of archiving, the student author of this thesis opted to temporarily restrict access to it. The full text of this thesis will become available to the public after the expiration of the embargo on 2023-06-02. |
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