A-Line Quantum Processing Units
The platform for practical quantum error correction
The A-Line offers the ultimate platform for quantum error correction specialists. Built on over a decade of design optimization, the A-Line features award winning processors with a surface code–optimized architecture with tunable transmon qubits, tunable couplers, and Purcell filters. Providing the performance needed to reach below-threshold error rates, the A-Line gives QEC experts the platform to reach maximum error suppression.
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Our path to 10K qubits
Planar Architecture
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17 qubits
Golden Contralto-A microchip with circuit details and screws on a black background.
Contralto-A17
Real time quantum error correction
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The award winning Contralto-A17 QPU is the next milestone on your roadmap to quantum error correction capable systems. The 17-qubit chip design is optimized for running a distance-3 surface code, with tunable qubits and tunable couplers for optimal control.
Shipping in 2026
41 qubits
Top view of an octagonal gold-colored electronic circuit board with a central rectangular component secured by four screws.
Tenor-A41
Logical operations
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With the 41-qubit architecture, the Tenor-A QPU enables logical two-qubit gates and advances the frontier of quantum error correction.
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Frequently asked questions
Why are A-Line quantum processors better suited for Quantum Error Correction (QEC) and advanced algorithms?

A-Line quantum processors use tunable couplers which allow the qubit-qubit interaction to be dynamically turned on and off. This is critical for suppressing ZZ-crosstalk during idle states and achieving high-fidelity CZ gates, making the A-Line the ideal platform for implementing Quantum Error Correction (QEC) codes (like distance-3 surface codes) and complex variational quantum algorithms.

How does the 'Quantum Open Architecture' ensure compatibility with external control hardware and software?

Adhering to the Quantum Open Architecture model, the A-Line QPUs are designed for maximum flexibility. They integrate into any quantum stack, allowing control over the entire system. Our QPUs are fully compatible with automation platforms like QuantrolOx’s Quantum EDGE and control stacks such as Q-CTRL’s Boulder Opal.

What is the price of an A-Line quantum processor?

Pricing is determined by the chosen model's complexity (e.g., qubit count and connectivity) and order volume. Please contact us to receive a tailored quotation for your specific project requirements.

What training and technical support is provided to optimize the performance of tunable couplers in my system?

We provide expert support, detailed documentation, and optional training on installation, operation, and best practices for optimizing tunable coupler performance. Our dedicated Customer Success Engineer and Application Scientist ensure you achieve the best possible gate fidelities and system stability.