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Resonator Characterization via the Pound-Drever-Hall Method

21.08.2023

PDH Block diagram

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 Material Characterization for Streamlined Qubit Development

03.01.2022

Basic decoherence types

In this webinar, we covered the material properties that are most important to consider when developing qubits with longer coherence times and looked into how to characterize these materials accurately and efficiently. By focusing on the fundamental properties of the materials, simpler fabrication methods and experimental setups can be used...

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

20.03.2018

Tandem Modulation

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...

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