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IR Filter

Measurement Infrastructure

An IR Filter protects sensitive quantum devices from high-energy photons that might cause unwanted heating or decoherence.

The coaxial Infrared Filter (IR Filter) blocks infrared radiation, while still enabling high signal fidelity within the DC – 6 GHz passband, where it is optimized for low return loss and low insertion loss.

The IR Filter protects sensitive quantum devices that operate below 1 K from high-energy photons that can cause unwanted heating or decoherence. In addition, it improves the thermalization of the center conductor in a coaxial line.

The IR Filter has connectors that can be thermally anchored to the Bluefors RF Installation Set, or enable its use as an adapter between coaxial cables.

A common application of the IR Filter is in superconducting qubit devices where infrared radiation is suspected to generate quasi-particle excitations that reduce the coherence time of the qubit.

Product Highlights


1.0

IR Filter

Measurement Infrastructure


Filtering Noise

The Bluefors IR Filter absorbs and dissipates high-frequency noise above the measurement frequency band.


Boosting Measurement Fidelity

The IR Filter enables high-fidelity measurements within the measurement frequency band.


Services

Total System Care

Total System Care enables you to focus on your own work – doing research and measurements. The service ensures that systems operate at the best possible performance level and with maximal uptime, without users needing to spend time maintaining the systems themselves.

Technical Specifications


2.0

IR Filter

Measurement Infrastructure

IR Filter
Connector typeSMA (jack) – SMA (jack)
Dielectric fillIR absorber
Insertion loss DC – 6 GH<1 dB
Return loss DC – 6 GHz>20 dB
Total length57.4 mm

S-Parameter Data

Typical microwave S-parameter data (transmission and reflection) of the Bluefors IR Filter.

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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