Course

PHYS-464: Solid state systems for quantum information

Summary

This course will give an overview of the experimental state of the art of quantum technology for Quantum Information Processing (QIP). We will explore some of the most promising approaches for realizing quantum hardware and critically assess each approach's strengths and weaknesses.

Lectures

Instructor

Pasquale Scarlino

I obtained my master's degree in Physics at the University of Salento, Lecce (Italy) in February 2011. During 2006-2011, I have also been a student of Scuola Superiore ISUFI (SSI). SSI is one of six schools of excellence established in Italy to develop the intellectual capital in technological and social sciences. I conducted an external Master thesis project during an 8 months internship in the Quantum Transport Group at TU Delft, under the supervision of Prof. L.M.K. Vandersypen. There, I implemented the Quantum Point Contact Radio-Frequency Reflectometry technique, which allows increasing the single-shot electron spin readout bandwidth and is currently routinely used in the group.I obtained my Ph.D. degree in February 2016, in the Spin Qubits group of Prof. L.M.K. Vandersypen at the Kavli Institute of Nanoscience-Qutech (TU Delft). During my Ph.D. I have been leading the Si/SiGe spin qubits project, collaborating with the M. Eriksson Group at Wisconsin University. In parallel, I have been working on other different projects, in particular with GaAs depletion quantum dots, high impedance superconducting resonators, and surface acoustic wave resonators. I have been working as a Postdoc fellow in the group of Prof. A. Wallraff (Quantum Device Lab) at ETH Zurich. My main project, in collaboration with the group of Prof. K. Ensslin and Prof. T. Ihn, consisted in integrating semiconductor and superconductor technologies. Realizing a well-controlled interface between the semiconductor and superconductor-based quantum information technologies may allow harnessing the best of both device architectures, for example by providing an interface between strongly coupled charge state and high coherence spin states. Furthermore, it enables the possibility to explore light/matter hybridization in a class of solid-state systems and regimes that are new in the context of quantum optics.From June 2019 till September 2020, I have been a Senior Researcher at Microsoft Station Q Copenhagen and at the Center for Quantum Devices in Copenhagen, focusing on developing semiconductor-superconducting hybrid hardware for topologically protected quantum computation.Since October 2020, I am a tenure track Assistant Professor of Physics in the School of Basic Sciences at the EPFL where I founded the Hybrid Quantum Circuit (HQC) laboratory.

Official source

Moodle Page

http://go.epfl.ch/PHYS-464

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Summary

Lectures

Instructor

Pasquale Scarlino

Official source

Moodle Page

http://go.epfl.ch/PHYS-464

Lectures in this course (26)

Quantum-Limited Amplifier and Qubit Readout

Explores quantum-limited amplifiers, vacuum Rabi splitting, and single-shot qubit readout.

Quantum Dot Physics

Delves into the physics of quantum dots, discussing energy scales, thermal effects, and applications in spin qubits.

Quantum Dots: Basic Concepts and Applications

Covers the concept of quantum dots, their similarities to atoms, and potential applications in quantum computation.

Quantum Point Contact as Charge Detector

Explores quantum point contact as a charge detector in quantum systems and the detection of charge transitions between quantum dots.

Single Electron Spin Qubits

Explores spin qubits in quantum dots, real-time single-electron detection, tunneling response, energy-selective readout, T₁ relaxation time, spin relaxation, and coherent spin control.

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