Supervisor: A/Prof. Dimi Culcer
Electrical control of spins could pave the way for scalable information platforms. The spin-orbit interaction provides a pathway towards this goal: an electric field changes the electron’s momentum and, through the spin-orbit interaction, it rotates its spin as well.
Our recent work has found that certain spin bits based on spin-3/2 holes in semiconductors can be effectively controlled by electrical means using a gate electrode, which offers fast one- and two-qubit rotations. However, the spin-orbit interaction also brings with it sensitivity to random electric fields, such as those due to phonons and noise, and can result in a decrease in coherence.
The aim of this project is to determine what the trade-off is between fast electrical control and decoherence: can we make electrical spin bits fast enough that we do not need to worry about loss of information?
If you have any questions, please contact A/Prof. Dimi Culcer at d.culcer@unsw.edu.au.
Interested applicants must meet UNSW PhD entry requirements. See https://research.unsw.edu.au/submit-application for more information.