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Run OpenQASM Circuits on Your Quantum Chip

26.02.2024

In this blog post, we present an efficient way to convert your OpenQASM3-based quantum circuits to pulse generation from your quantum control hardware through Labone Q. As an example we will work with a quantum protocol essential for quantum operations: two-qubit Randomized Benchmarking (RB).

Resolved Sideband Measurements of a Microwave Optomechanical Resonator

25.03.2024

Sideband measurement with SHFLI

Want to measure the motion of a nanomechanical oscillator coupled to a microwave cavity? This blog post shows how it is possible to use a single lock-in amplifier to characterize microwave cavities and determine the motional sidebands with a very simple setup. Furthermore, we also discuss the implementation of homodyne and heterodyne detection with the SHFLI thanks to its multi-demodulator options.

Quantum Technology User Meeting 2024

30.01.2024

Participants of the 4th QT User Meeting

This year’s QT User Meeting welcomed our guests to our home location in Zurich. The event program focused on superconducting and hybrid qubit technologies targeted at quantum computing applications and covered the full breadth of research topics, from exploratory novel qubit designs to scale-up challenges in leading technologies. Take a look at this blog post to revisit some of the program highlights. We look forward to seeing you at our next event!

DLTS User Meeting 2023 - Q&A

21.12.2023

DLTS User Meeting 2023

This blog post presents the questions and answers raised during the DLTS User Meeting 2023. The meeting intended to bring together the community who may face common measurement challenges and allow them to share knowledge and expertise.

利用锁相放大器和MFITF夹具测量电阻的热噪声电压

19.12.2023

Teaser

现代物理学中有一个经典的实验,即测量电阻上的热噪声电压,首次测量是由 John B. Johnson 于1926年在贝尔实验室中首次完成,并由 Harry Nyquist完成理论解释,因此热噪声又被称为Johnson噪声或者Johnson-Nyquist噪声。其本质来自于载流子的无规则热运动,这一实验也可以用作对于玻尔兹曼常量的计算,本实验将对于纯电阻器件进行测量其热噪声电压,并给出测量建议。

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

23.11.2023

Transmission measurement of different harmonics through chiral edge states.

Chiral 1D edge states of the quantum anomalous Hall effect can be used as “optical fibers” for electrons. To gain a deeper understanding of their properties, the dispersion relation and the attenuation of edge excitations in the microwave regime can be investigated. In this blog post, we present measurements that were performed in the lab of Prof. Bocquillon using our SHFLI 8.5 GHz Lock-in Amplifier.

Getting Started with the Raspberry Pi

09.11.2023

MFLI lock-in amplifier with the Raspberry Pi

Do you want to use a Raspberry Pi to control your Zurich Instruments devices? Although instruments are traditionnaly hooked up to a measurement computer, some applications might require a computer with a smaller footprint or lower power requirement. This blog post will walk you through the necessary steps and help get you started.

Boost your Signal-to-Noise Ratio with Lock-in Detection

10.10.2023

Webinar: Boost your Signal-to-Noise Ratio with Lock-in Amplifiers

In this tutorial, we learned how to use lock-in amplifiers and optimize measurement parameters to get the best signal-to-noise ratio. We discussed three common use cases: optics and photonics experiments, material characterization, and resonator characterization. Finally, we looked at more advanced techniques, such as double modulation and multi-frequency measurements.

Capacitance Transients at Variable Temperature

05.10.2023

LabOne DAQ Module showing capacitive transients

This blog post shows the ease of set-up of the MFIA to measure capacitive transients for self-build DLTS. The combination of MFIA plus third-party temperature stage brings the possibility to tune your DLTS measurement parameters to suit your sample. Home-building your DLTS system with the MFIA gives you flexibility and the freedom to choose the test signal amplitude, frequency and even the mode of stressing pulse. 

Different Views on Quality Factor and Equivalent Circuit Modeling

21.09.2023

MFIA front

For ease of communication, scientific nomenclature is often named as short as possible. Unfortunately, sometimes this convention leads to different terms sharing the same name, which may lead to confusion. Taking piezoelectric impedance and dielectric impedance as examples in this blog post, we will clarify 2 ambiguous terms, the quality...

Fast PLL Optimization for High Q Resonators Without Frequency Sweeps

19.09.2023

PID error before and after optimization

Resonators with very high Q factor are notoriously complicated to lock because of the steep slope phase at resonance. Precise determination of phase setpoint and gains can be highly time consuming since very high frequency resolution is required. This blog explains how to optimize the PLL by starting with an educated guess and optimizing everything in closed-loop, which is much faster than conventional open-loop characterizations.

How to Measure Allan Variance with Zurich Instruments Lock-in Amplifiers

28.08.2023

Allan Variation measurement with Zurich Instruments lock-in amplifiers.

Any measurement resolution is limited by random fluctuations, "noise", of the measured quantities. Practical systems also might experience variations of parameters causing "drifts" in the measurements. Various sources of such noises and drifts may take different time or frequency dependencies. To understand how such fluctuations affect one's measurement, a careful analysis of such noise and drifts must be performed. Discrimination of such noise sources might be performed by performing Allan deviation measurement of discretely sample data. In this blog post, we discuss how to easily measure Allan variance with our Zurich Instruments lock-in amplifier.

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