Japan installs world’s largest quantum control system
Keysight Technologies has installed the world’s largest commercial quantum control system at a lab in Japan.
The system at the G-QuAT Centre at National Institute of Advanced Industrial Science and Technology (AIST) supports over 1000 qubits.
The control system is one of the limiting factors for scaling up quantum computer systems sa each qubit needs multiple control lines at temperatures close to absolute zero. Some architectures are developing ways to reduce the number of control lines needed.
“Control systems serve a vital role in quantum computing, acting as the bidirectional bridge between the classical and quantum worlds,” said Dr. Eric Holland, General Manager, Keysight Quantum Engineer Solutions.
The QCS system developed by Keysight enables full direct digital conversion from DC to 16GHz with a 2GHz bandwidth and acquisition of microwave, baseband, and digital signals used to control and read out qubits.
The 20 qubit system is based around two M9046A 18 slot PXIe chassis with 12 M5300A PXIe RF AWG: 4 Channels, DC-16 GHz, 2 GHz IBW chassis. Two M5200A PXIe 12bit four channel digitizers are used with two M5201A PXIe Down Converter chassis each have four channels with the 2 to 16GHz RF and a 0.01-2.4 GHz intermediate frequency. These are synchronised by two M9032A dual port PXIe modules and can be scaled up to support 1000 qubits.
The 1000 qubit quantum control system is assembled from Keysight PXIe chassis
The system installed by test company Keysight is part of the new evaluation testbed at G-QuAT, which will push the limits of what is possible with quantum computing in terms of both scale and performance.
AIST is working with Finnish quantum computer system builder IQM Quantum Computers as well as Fujitsu, IBM and even Intel. Fujitsu has shown a 256 qubit machine developed at the Riken research lab and has plans for a 1000 qubit machine.
Extensive testing demonstrated that rigorous requirements on noise, time alignment, and phase coherence are maintained across the system. This delivery establishes Keysight as the first commercial control system vendor to deliver a system that supports 1,000+ qubits and proves that Keysight’s QCS can meet the scaling challenges of next-generation quantum computers.
“The 1,000-qubit control system developed here is a groundbreaking device, the world’s first and largest of its kind,” said Dr. Masahiro Horibe, Deputy Director of G-QuAT at AIST.
“The advancement of quantum technology requires not only theoretical progress but also sophisticated engineering to support it. This system has enabled the precise synchronisation, control, and readout of complex multi-channel signals, making large-scale qubit operations possible. It is a clear demonstration that engineering is paving the way for the future of quantum technology.”
www.keysight.com; www.aist.go.jp; www.meetiqm.com
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