Blogs

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...

How to Set Two Oscillation Frequencies for the MFIA?

09.02.2022

Result of configuring two osc frequencies

Sometimes we want to measure impedance at two different frequencies simultaneously. The second frequency can be either higher-order harmonics or completely independent from the first one. Thanks to the MF-MD Multi-Demodulator option, we can conveniently set this up. In this short blog post, we will walk you through.

Quantum Material Characterization for Streamlined Qubit Development

03.01.2022

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...

Low-Frequency DLTS of Perovskite Solar Cells

29.06.2021

Deep level transient spectroscopy (DLTS) is a powerful and commonly used technique to investigate the concentration and carrier binding energy of defects in semiconductors. The technique involves measuring capacitance transients at different temperatures, typically at 1 MHz. However, DLTS can also be carried out at lower frequencies such as 80...

Probing Local Magnetic Field Patterns - Q&A

26.02.2021

For this webinar we teamed up with Prof. Martino Poggio , whose work focuses on understanding the physics of materials and phenomena that is strongly dependent on the local conditions, be it by impurities or through the design through local probing of magnetic fields coming from currents and magnetization. Several...

The Many Applications of the MF-MD Multi-Demodulator Option

24.08.2020

In my research days, lock-in amplifiers were a standard fixture in a transport measurement setup, and there were many of them. Each lock-in measured one signal in the experiment. Adding more lock-in amplifiers in the setup was the only way to learn more about the device transport properties, but this...

Frequency-Domain Response of Lock-in Filters

19.03.2019

Introduction The response of a lock-in amplifier is characterized by the parameters of its low-pass filter (LPF), i.e., time constant and filter order. The temporal response of the LPF demonstrates the latency of measurement while its spectral response shows the noise characteristics of measured signals. This blog post explains how...

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...

Fast Auto-Approach to Control Stepper Motor with the MFLI Threshold Unit

22.02.2017

In many applications where the distance between two objects needs to be reduced to a predefined gap, the ability to control a stepper motor with clear stop conditions from different sensors is of high practical interest. Such functionality can be used to bring an optical lens to the appropriate working...

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