Radio Frequency Readout of Silicon Quantum Dot Spin Qubits Using Superconductor Resonators

Leuven
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About a week ago

Develop fast readout protocols for measuring silicon spin qubit devices

Quantum computers are expected to tackle many real-life problems that are unsolvable by classical computers. In the recent years, great progress has been seen. More and more well-known companies, e.g. Microsoft and Intel, have joined this field. Imec is also working on the essential building block of quantum computers, the qubit. Qubits are short for quantum bits and are similar to classical bits. Meanwhile, they are coherent quantum two-level systems, so that we can utilize their superposition and entanglement to boost computing power.

One of Imec's research focuses on silicon quantum dot qubits. A single electron can be confined in a quantum dot, and the spin state of that electron forms a natural qubit system. The electron spin offers long coherence time while the silicon platform could be integrated directly into Imec's industry manufacturing process.

The aim of this project is to develop fast readout protocols to measure the spin states of the isolated electrons in quantum dots. The signal of the electron spin is very weak. Therefore, we use a technique called spin-to-charge conversion to map the spin state to charge occupation for readout. In this project, you will use radio frequency (RF) superconductor resonators to further accelerate the readout of a single electron charge. You will learn how to operate qubit devices, compare different resonator designs, and develop methodologies to quantify sensitivity. Experience in RF circuit and Python programming is preferred.

Type of project: Thesis, Internship

Duration: 6-12 Month

Required degree: Master of Science, Master of Engineering Science

Required background: Physics, Nanoscience & Nanotechnology

Supervising scientist(s): For further information or for application, please contact: Roy Li (Roy.Li@imec.be)

Imec allowance will be provided for students studying at a non-Belgian university.

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