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Quantum Computing Control System

In 2018, Zurich Instruments introduced the first commercial Quantum Computing Control System (QCCS), designed to control more than 100 superconducting and spin qubits. Each component of the QCCS is conceived to play a specific role in qubit control, readout and feedback, and operates in a fully synchronized manner with the other parts of the system. LabOne Q, the Zurich Instruments control software for the QCCS, provides a full measurement framework for quantum computing and facilitates the integration into higher-level software.

The Zurich Instruments QCCS supports researchers and engineers by allowing them to focus on the development of quantum processors and other elements of the quantum stack while benefiting from the most advanced classical control electronics and software.

Efficient workflows, tailored specifications and feature sets, and a high degree of reliability are the characteristics most valued by our customers.

The scientific achievements accomplished with the QCCS (see below for a list of publications) are a testimony to our close engagement with some of the most ambitious research groups in this area. The QCCS operates directly at qubit frequencies without mixer calibration, offers high density and low cost per qubit, and provides a growing feature set that takes into account the most recent developments in quantum computing.

Zurich Instruments QCCS Quantum Computing Control System Logo


Key Features

  • Scalable design: new inputs and outputs can be added at any time, and a high channel density and consistent performance are guaranteed for all setup sizes.
  • Productivity-boosting software: LabOne Q efficiently connects high-level quantum algorithms with the analog signals at the quantum device.
  • Hardware specifications that match the application: low noise, high resolution, and large bandwidth.
  • A thought-through and tested systems approach: precise synchronization, reliable operation.
  • Feedback operation: fast data propagation across the system, powerful decoding capability.

System Control

System Control

  • Operation as a single instrument
  • Synchronization and real-time operation across the entire system
  • Parallelization and queuing of tasks to minimize idle time on the quantum device
  • Interfaces to other quantum frameworks

Qubit Control

Qubit Control

  • Access to maximum gate fidelity: low noise, high bandwidth, high stability
  • Solutions for all typical single- and two-qubit control signals
  • High system usage thanks to memory-efficient sequencing

Qubit Readout

Qubit Readout

  • Up to 64 qubits per instrument
  • Maximum readout fidelity
  • Low-latency, real-time operation
  • Analysis of qutrits and ququads with multi-state discrimination

Quantum Feedback

Quantum Feedback

  • Multiple supported configurations: from single-qubit to large-scale quantum computing
  • Ultra-low latency down to 50 ns
  • Powerful multi-qubit state decoder

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QCCS Overview Video

This video provides you with an overview of the QCCS design and functionality. Each of its components is engineered for optimal performance in its respective function, and all of them operate together seamlessly as a system to generate value for quantum computing.

QCCS Quantum Computing Control System

QCCS Synchronization, Feedback, and Scale-up

The star architecture of the QCCS allows for accurate and reliable synchronization, global fast feedback for quantum error correction research, and scalability to hundreds of channels. The key role of the QHub Quantum System Hub at the center of the QCCS is highlighted in this video.

QHub Quantum System Hub

Case Study: IQM and Zurich Instruments

IQM is one of the few companies that can deliver an on-premises quantum computer to a customer today. In November 2021, the company reached a major milestone with the deployment of a 5-qubit system to VTT Technical Research Centre of Finland.

Their endeavours are supported by the Zurich Instruments QCCS, which provides performance-critical features off the shelf and a scaling path towards larger systems. Watch the video to see how Zurich Instruments and IQM work together to build a quantum computer.

Building a Quantum Computer Together | IQM & Zurich Instruments

Case Study: Quantum Inspire and Zurich Instruments

In April 2020, Quantum Inspire went live. As the first European quantum computer in the cloud, it provides access to 2 backends, one with superconducting transmon qubits and one with spin qubits. Both setups are powered by the Zurich Instruments QCCS.

  • Reliable, stable operation 24/7
  • Performance-critical features: multiplexed readout, precompensation and interfacing
  • Full feature set: bring-up, calibration and characterization, no manual re-cabling
  • Upgrade path to 100 qubits and beyond
Building Quantum Inspire (the making of)

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Related Webinars

Quantum Materials: from Characterization to Resonator Measurements

Quantum Materials: from Characterization to Resonator Measurements

Hands-on Superconducting Qubit Characterization

Hands-on Superconducting Qubit Characterization | Zurich Instruments Webinar

Quantum Technology User Meeting 2022

Quantum Technology User Meeting 2022

A Fast and Integrated Qubit Control System: SHFQC Launch Event

A fast and Integrated Qubit Control System I Zurich Instruments Webinar

Related 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

Zurich Instruments

Qubit Control and Readout at Frequencies up to 20 GHz

Zurich Instruments

Repeat-Until-Success Algorithm on Superconducting Qubits with Real-Time Feedback

Related Publications

Bengtsson, A. et al.

Improved success probability with greater circuit depth for the quantum approximate optimization algorithm

Phys. Rev. Applied 14, 034010 (2020)

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)

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