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Quantum Computing Control System

Zurich Instruments is committed to supporting the development of quantum technologies, and it is in this spirit that it now offers the first commercial Quantum Computing Control System (QCCS).

Below is an illustration of the full quantum stack highlighting some of its most relevant components:

Full Quantum Stack

Full Quantum Stack with the Zurich Instruments Quantum Control System

The QCCS, which corresponds to the layer called "Classical System Control, Software and Hardware", ensures reliable control and measurement of a quantum device while providing a clean software interface to the next higher level in the quantum stack.

Zurich Instruments contributes hardware and software to enable researchers to scale up their setups to a large number of qubits and keep complexity to a minimum. The well-orchestrated interplay between all featured instruments gives our customers a key advantage, linking high-level quantum algorithms with their physical qubit implementation.

QCCS Key Features

  • Hardware specifications that match the application: low noise, high resolution, and large bandwidth.
  • A compact and scalable design: new channels can be added at any time.
  • A thought-through and tested systems approach: precise synchronization and sophisticated orchestration of all input and output channels.
  • Productivity-boosting software: LabOne® efficiently connects high-level quantum algorithms with the analog signals from the quantum device.

QCCS Components

quantum computing setup using the Zurich Instruments Quantum Computing Control System

QCCS Overview

Zurich Instruments - Qubit control for 100 qubits and more

PQSC Programmable Quantum System Controller

UHFQA Quantum Analyzer

HDAWG Arbitrary Waveform Generator

SHFQA Quantum Analyzer

The PQSC Programmable Quantum System Controller brings together the instrumentation required for quantum computers with up to 100 qubits. Its ZSync low-latency, real-time communication links are designed specifically for quantum computing: the PQSC overcomes the practical limitations of traditional control methods, making automated and rapid qubit calibration routines a reality. Programming access to the powerful Xilinx UltraScale+ FPGA is the basis for developing new and optimized processing solutions for rapid tune-up and error correction adapted to the specific algorithm and computer architecture in use.

The UHFQA Quantum Analyzer is a unique instrument for parallel readout of up to 10 superconducting or spin qubits with highest speed and fidelity. The UHFQA operates on a frequency span of up to ±600 MHz with nanosecond timing resolution, and it features 2 signal inputs and outputs for IQ base-band operation. Thanks to its low-latency signal processing chain of matched filters, real-time matrix operations, and state discrimination, the UHFQA supports the development of ambitious quantum computing projects for 100 qubits and more.

With the highest channel density and the most advanced synchronization features on the market, the HDAWG Arbitrary Waveform Generator is the choice for multi-channel applications with up to 64 channels. The noise characteristics of the 2.4 GSa/s, 16-bit signal generation and an ultra-low trigger latency unlock new levels of performance. Further, the LabOne control software provides an intuitive and efficient way to program arbitrary signals.

The SHFQA Quantum Analyzer integrates in a single instrument a full real-time readout setup for up to 64 superconducting qubits. The SHFQA operates in a frequency range from 0.5 to 8.5 GHz with a clean analysis bandwidth of 1 GHz and without the need for mixer calibration. The SHFQA enables multi-state discrimination with an optimal signal-to-noise ratio and minimal latency; data can be transmitted in real time to other instruments for active qubit reset or global error correction protocols. Controlled through the LabOne software suite, the SHFQA can support quantum computing projects with sizes up to several hundreds of qubits.

HDAWG High-Density Arbitrary Waveform Generator
SHFQA Quantum Analyzer

Application Notes

Zurich Instruments

Superconducting Qubit Characterization

Zurich Instruments

Active Reset of Superconducting Qubits

Zurich Instruments

Frequency Up-Conversion for Arbitrary Waveform Generators

Zurich Instruments

Bell State Preparation of Superconducting Qubits


Bengtsson, A. et al.

Quantum approximate optimization of the exact-cover problem on a superconducting quantum processor


Rol, M.A. et al.

Fast, high-fidelity conditional-phase gate exploiting leakage interference in weakly anharmonic superconducting qubits

Phys. Rev. Lett. 123, 120502 (2019)

Werninghaus, M. et al.

Leakage reduction in fast superconducting qubit gates via optimal control

Crippa, A. et al.

Gate-reflectometry dispersive readout and coherent control of a spin qubit in silicon

Nat. Commun. 10, 2776 (2019)

Rol, M.A. et al.

A fast, low-leakage, high-fidelity two-qubit gate for a programmable superconducting quantum computer

Phys. Rev. Lett. 123, 120502 (2019)

Bultink, C.C. et al.

General method for extracting the quantum efficiency of dispersive qubit readout in circuit QED

Appl. Phys. Lett. 112, 092601 (2018)

Andersen, C.K. et al.

Entanglement stabilization using ancilla-based parity detection and real-time feedback in superconducting circuits

npj Quantum Inf. 5, 69 (2019)

Collodo, M.C. et al.

Implementation of Conditional-Phase Gates based on tunable ZZ-Interactions


Guo, X.-Y. et al.

Observation of Bloch oscillations and Wannier-Stark localization on a superconducting processor


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