Company Blog

Microwave Measurements of Chiral Edge States of the Quantum Anomalous Hall Effect

23.11.2023

Resonator Characterization via the Pound-Drever-Hall Method

21.08.2023

This blog discusses methods for measuring the frequency fluctuations and quality factor, 𝑄, of a resonator. Resonators are physical systems that naturally oscillate at a well-defined frequency. At this resonant frequency, energy exchanges periodically between two forms, for example, kinetic and spring energy as in a scanning probe microscope’s cantilever...

Quantum Materials: from Characterization to Resonator Measurements - Q&A

26.06.2023

In this webinar, we discussed transport measurements on materials for quantum computing, why studying resonators accelerates development of materials used for quantum computing by yielding a wealth of information, and how to measure resonators effectively with the Pound-Drever-Hall method. The recording of the full webinar can be found here...

Quantum Material Characterization for Streamlined Qubit Development

03.01.2022

How to Demodulate Multi-frequency Signals such as AM, FM and PM

20.03.2018

Introduction When analyzing signals with multiple frequency components, it is important to measure the amplitude and phase of each frequency component accurately so that a change in the characteristics of one component does not affect the measurement of another frequency component. There are two different approaches to multi-frequency signal demodulation...

Q-Control Example VI Tutorial

04.12.2012

Using a Zurich Instruments lock-in amplifier, you can measure the quality factor of an arbitrary resonator - typically a resonant beam used in non-contact atomic force microscopy (NC-AFM) applications. This can be useful to increase phase sensitivity in a phase-locked loop (PLL) setup, for example, or to increase the characteristic...