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Quantum Technologies

Run OpenQASM Circuits on Your Quantum Chip

26.02.2024

Convert OpenQASM to signals

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!

Stable Synchronization over 52 Meters and 14 Days

23.08.2023

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

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...

Speeding up NV Center Measurements with Real-time Control

21.08.2023

Experiment conceptual diagram

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.

Quantum Materials: from Characterization to Resonator Measurements - Q&A

26.06.2023

QT Webinar Physic Today

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...

Subsampling Techniques for Achieving Waveform Precision in Picoseconds

11.11.2022

Oscilloscope image HDAWG subsampling

An arbitrary waveform generator (AWG) can generate pulses with a timing resolution much finer than its sampling period. Users are often unaware of this capability, yet it enables highly precise timing control in application use cases such as NV center dynamical decoupling, flux pulse width control, AWG channel deskew, and IQ mixer calibration...

Synchronizing Multiple AWG Channels

09.09.2022

Pulse sheet

Does your application require multiple AWG channels with precise and stable timing synchronization? In this blog post, we will show how to achieve this with the HDAWG Arbitrary Waveform Generator for setup sizes ranging from few channels up to 144. We demonstrate 3 methods suitable for different use cases.

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