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Run OpenQASM Circuits on Your Quantum Chip


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


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


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


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.

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


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


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


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


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


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


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


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.

Stable Synchronization over 52 Meters and 14 Days


Airbus wingspan

The Zurich Instruments Quantum Computing Control System provides reliable and precise timing synchronization out of the box. But what does reliable synchronization really mean? Here, we show results from two experiments that put the synchronization stability to a hard test. First, we synchronize two SHFQC Qubit Controllers across 52 meters synchronization distance to conduct a photon pitch-and-catch experiment on a real quantum chip. Second, we assess the long-term stability of such long-distance synchronization links for a full 14-day period.

Resonator Characterization via the Pound-Drever-Hall Method


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...

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