In this course the physics of semiconductor nanodevices will be discussed. Starting from a classical transistor it will be shown how nanoscale transistors exhibit quantum behavior at low temperatures. The physics of spin qubits in single and double quantum dots will be discussed. Latest ideas of how to couple quantum bits will be presented and recent experiments will be discussed. Finally in the second part of the lecture the physics of hybrid superconducting-semiconducting devices will be addressed. Such devices can lead to the so-called Majorana Fermions. In particular, Andreev reflection and Andreev bound states will be discussed. During the course there will be a practical session during which the students will have the opportunity to perform low temperature transport measurements.
In the second part of the course, we will revisit transport in nanodevices from the perspective of the scattering matrix. We will discuss the Landauer-Bü[ker formula, applying it to simple test cases and to the quantized Majorana conductance problem. The role of disorder will be discussed, and some examples given of how conductance statistics can be calculated using random matrix theory. We will then discuss how scattering can be used to study microwave properties in superconductor-semiconductor hybrid systems.
Target group: PhD students. Mainly physicists.
Prerequisites: Prior knowledge of basic electronics, semiconductor physics and quantum mechanics would be of advantage in order to be able to follow the course.
Evaluation: participation in the class, the recitations and homework
Teaching format: The course will consist of lectures. For the recitation papers related to the subject of the course and some homework will be given.
ECTS: 6 Year: 2021
Track segment(s):
PHY-CON Physics - Condensed Matter
Teacher(s):
Andrew Higginbotham Georgios Katsaros
Teaching assistant(s):
If you want to enroll to this course, please click: REGISTER
- Teacher: Georgios Katsaros
- Teaching Assistant: Oliver Sagi