Launch/status: March 9, 2026
# Zurich Instruments ZQCS Quantum Control System
The **Zurich Instruments ZQCS Quantum Control System** is a scalable control platform developed for the operation of next-generation quantum processors, including systems approaching the **1000-qubit scale**.
Designed to address the key requirements of fault-tolerant quantum computing, the ZQCS combines high-density qubit control and readout, powerful real-time processing, advanced synchronization, and a scalable software environment. The system provides the infrastructure required for large-scale quantum experiments, quantum error correction (QEC), and high-fidelity qubit operation.
## Key Features
* Modular architecture combining qubit control and readout channels
* High-performance real-time processing designed for quantum error correction
* Up to **1092 channels per 19-inch rack**
* High signal-to-noise ratio for precise qubit control and readout
* Direct-RF signal generation in the first Nyquist zone
* Flexible scaling from a single shelf to multi-shelf configurations
* Integrated synchronization for large-scale quantum programs
* Comprehensive software control at pulse, gate, and workflow levels
* High-bandwidth connectivity to classical CPU and GPU computing resources
## Designed for Large-Scale Quantum Systems
The ZQCS architecture is engineered to support quantum computing systems as they grow from laboratory-scale experiments to processors requiring hundreds or thousands of control and readout channels.
Its high-density hardware architecture enables more than **1000 channels within a standard 19-inch rack**, helping reduce the infrastructure footprint of large quantum systems. Advanced synchronization maintains precise timing across the system, ensuring that control pulses are generated and delivered exactly when required.
The platform is also designed for integration into water-cooled enclosures, providing an effective approach to thermal management and heat dissipation in high-density installations.
## Advanced Quantum Error Correction
Quantum error correction requires extremely fast interaction between quantum hardware and classical computing resources. The ZQCS provides a powerful real-time processing architecture specifically designed to support these demanding workflows.
Each shelf incorporates a **programmable FPGA with direct access to as many as 364 channels**. Multiple shelves can be interconnected through a full-mesh network, allowing processing and measurement resources to work together efficiently across large systems.
A **RoCE (RDMA over Converged Ethernet)** interface provides high-bandwidth, low-latency communication with external CPU and GPU resources, enabling close integration between quantum control hardware and classical computing infrastructure.
## High-Fidelity Qubit Control
Maintaining high quantum fidelities becomes increasingly challenging as quantum processors grow in size. The ZQCS addresses this requirement with an analog front end optimized specifically for accurate and stable qubit control.
Its **direct-RF architecture operating in the first Nyquist zone** provides excellent signal quality with high SNR, low spurious content, stable amplitude and phase characteristics, and low latency.
These capabilities are designed to minimize errors introduced by the control electronics and support the development of quantum systems targeting increasingly demanding fidelity levels.
## Scalable Quantum Control Software
Hardware scalability is complemented by the **Zurich Instruments LabOne Q** software environment.
LabOne Q enables researchers and engineers to develop and manage quantum experiments at different abstraction levels, including **pulses, gates, and complete experimental workflows**.
An optimized compiler and runtime translate experiments efficiently to the underlying control hardware, while automation capabilities help maintain consistent experimental performance as systems scale from individual quantum devices to substantially larger processor architectures.
Together, the ZQCS hardware and LabOne Q software provide a unified platform for developing, controlling, and scaling advanced quantum computing systems.
