Company Blog

Real-time feedback control can often speed up quantum experiments, increase fidelity, or enable new methods. One example is adaptive sensing and characterization, which uses feedback to minimize the number of measurements needed to estimate a given quantity. Our customers in the group of Prof. Cristian Bonato at Heriot-Watt University (Edinburgh, Scotland) have recently demonstrated this method on an NV-center based spin qubit and achieved an increase in speed by up to an order of magnitude compared to non-adaptive approaches in the estimation of qubit decoherence timescales.

This blog post accompanies the webinar "Superconducting Qubit Characterization", which introduced the basic physics of transmon qubits as well as the tools and methods required to tune them up. The webinar included a live Q&A session, but due to time constraints, not all of the viewers' questions could be answered within the duration of the session. Below, we address the technical questions asked during the webinar...

Were you ever curious about how the double-superheterodyne frequency conversion compares with IQ mixing when tested on real qubits? This blog post introduces such a comparison published in a recent preprint paper by the ETH QuDev lab. One of its main results hints at double-superheterodyne enabling a higher gate fidelity and lower state leakage rate than a standard IQ mixing approach!

It all starts with a few qubits: a masterfully engineered few-qubit system forms the groundwork for advances in large-scale quantum computers. This blog post gives you our 5 top reasons why you should base your few-qubit setup on the Zurich Instruments SHFQC Qubit Controller.

Characterizing semiconductor spin qubits with radio-frequency (RF) reflectometry offers a speed advantage over low-frequency conductance measurements thanks to insensitivity to 1/f noise. In this blog post, the measurements of Josip Kukučka and his colleagues...

This post explains how to measure the frequency response of a component or system with high spectral resolution in a minimum amount of time. Rather than sweeping the frequency and recording each spectral point individually, the approach presented here is based on a fast and continuous change of the frequency...

LabOne provides two tools that save time and improve performance for anybody working with the UHF-PID option: the PID Advisor and the Auto Tune feature. They enable automation of the feedback parameter tuning required to achieve the best PID (proportional-integral-derivative) controller performance. In this blog post, we'll show you an example that demonstrates the power of both of these tools...

The UHFLI Lock-in Amplifier features the smallest time constant on the market, making it an excellent instrument for fast measurements like in imaging applications. The UHFLI can provide demodulated data at a bandwidth of up to 5.2 MHz and sampled at up to 14 MSa/s...