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Modular electronics for 20 qubit Swedish quantum computer

Modular electronics for 20 qubit Swedish quantum computer

Business news |
By Nick Flaherty



The Qblox fully-integrated control stack comprises dedicated and modular electronics developed in Delft and will be used by the Quantum Technology Lab (QTL) at Chalmers for the 20-qubit processor. The quantum processor project started in 2018, spearheaded by Dr Giovanna Tancredi with Prof Jonas Bylander and Prof Per Delsing and is based on superconducting circuits, a widely-used technology for quantum computing.

In order to effectively exploit a 20-qubit quantum computer, QTL went through a thorough tendering process between various well-known competitors from around the world, the procurement contract has been awarded to Qblox because of its ability to surpass the requested technical requirements and its ability in scaling up in the future.

“This request for a control stack for 20 qubits is the first of its kind in the world. The Qblox team is proud to service the Quantum Technology Lab at Chalmers University,” said Dr Niels Bultink, CEO of Qblox.

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The Qblox control stack comprises a fully-integrated system providing all software and hardware components to control and readout their quantum device. The qubit control is managed by the QCM-RF module, which directly outputs RF signals in the range of 2-18.5 GHz. It integrates 6 AWG’s capable of generating complex baseband signals, two LO’s, and two IQ mixers. The module can self-calibrate its IQ mixer skewness, amplitude imbalance and LO leakage. 

The qubit readout is performed by the QRM-RF module which includes LO’s, mixers, 6 AWGs pulse generators and digitizers for multiplexed readout in the range of 2 – 18.5 GHz. The QRM has advanced binning and averaging capabilities and can store up to 131072 IQ measurement results in a single experimental run.

www.qblox.com; www.chalmers.se

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