QCage

Measurement Infrastructure

QCage products are sample holder systems for superconducting qubit experiments, carefully engineered for high-fidelity operation of qubits. QCage products are developed and manufactured by our partner Quantum Machines.

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QCage is a versatile sample holder system for superconducting qubit experiments. The compact QCage.24 enables microwave measurements for 5–10 qubits and features 24 coaxial transmission lines that have been optimized to transmit control and readout signals at frequencies all the way to 18 GHz. It’s an optimal solution regarding both performance metrics for coherent operations and ease-of-use in a lab workflow.

QCage products are developed and manufactured by our partner Quantum Machines.

Product Highlights

1.0

QCage

Measurement Infrastructure

Versatile Qubit Sample Holder

QCage.24 is a versatile qubit sample holder featuring a low-loss printed circuit board (PCB) with 24 embedded coplanar transmission lines. The product enables high-fidelity qubit measurements at frequencies up to 18 GHz, ideal for 5–10 qubit measurements.

To minimize losses and enhance circuit coherence, the sample chip is fully suspended in QCage’s cavity. Both the cavity and PCB are optimized for resonance-free transmission. The sample holder features an EMC tight superconducting shielding enclosure to isolate samples from external electromagnetic fields. Additionally, a flux biasing magnet is mounted inside the superconducting shielding with filtered feedthroughs.

The product was previously featured in our research paper demonstrating a characterization method for qubit microwave packaging.

Efficient Magnetic Shielding

QCage Magnetic Shielding is available to protect the product from external interference and ensure proper thermalization. The magnetic shielding is achieved through a combination of an outer mu-metal shield and a superconducting aluminum can, with the shielding thermalized by a complete inner copper sleeve. This provides full Meissner effect shielding, effectively eliminating external stray magnetic fields and radiation.

Tested and Pre-installed

The product is available for LD and XLDsl systems, arriving tested and pre-installed in systems. The sample holder is installed at the mixing chamber flange, and signal transmission wiring is fully tested. Verification testing is done both during the factory installation and on-site delivery.

Services

Total System Care

Total System Care enables you to focus on your work—carrying out research, operating quantum computers, and driving innovation—now, and over the full lifetime of your system.

Tailored to your specific needs, you’ll benefit from a package with an agreed service level and accompanying set of field services that ensure your systems operate at the best possible performance level.

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Product Availability

2.0

QCage

Measurement Infrastructure

System	SD	LH	LD	XLDsl
Availability			Available	Available

Services

Customer Care

We support our customers throughout the lifetime of their system, providing dedicated care to find solutions for any issues. Our technicians and engineers are ready to help you wherever you are located, with prompt service delivered either remotely or on-site.

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QCage

Measurement Infrastructure