Pulsed low-noise amplifiers for quantum information systems
Research Project, 2022 – 2024

Purpose and goal
The objective is to demonstrate that a pulsed microwave low-noise amplifier (LNA) can operate with marginal penalty in gain and noise as compared to a static LNA used in present quantum information systems. The goal is to show that a pulsed LNA can operate under 10-microwatt power dissipation.

Expected results and effects
In this project, the parties will develop a unique concept based on pulsed amplifier technology in the readout of microwave qubits. By feedback of the electronics circuit, gain can be stabilized and power consumption minimized, i.e. the amplifier is smart. If the project is successful, we have a technology to reduce power consumption by 100 times compared to today´s industrial solution. This would strengthen the participating Swedish SME´s position in an internationally growing market for quantum computers.


Jan Grahn (contact)

Chalmers, Microtechnology and Nanoscience (MC2), Terahertz and Millimetre Wave Laboratory


Low Noise Factory AB

Gothenburg, Sweden



Project ID: 2022-00830
Funding Chalmers participation during 2022–2024

Related Areas of Advance and Infrastructure

Sustainable development

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