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Keysight Technologies

Quantum Control System: RF AWGs, digitizers, converters

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Where it fits in a quantum computer

Sells a Quantum Control System (introduced February 2023) built from PXIe modules; its listed 20–1,000-qubit configuration combines 12 four-channel M5300A RF AWGs (DC–16 GHz), M5200A digitizers, M5201A down converters (2–16 GHz) and sync modules in two chassis. Keysight says the system is embedded in the 256-qubit computer at the RIKEN RQC-Fujitsu Collaboration Center (May 15, 2025), and it delivered a system able to control more than 1,000 superconducting qubits to AIST’s G-QuAT center (July 29, 2025); NVIDIA lists Keysight among its NVQLink controller builders.

What the evidence establishes

Quantum-computing evidence

Disclosed: Keysight’s releases name the Fujitsu–RIKEN 256-qubit computer and AIST’s G-QuAT center as Quantum Control System installations, and its product page lists the modules.

An explicit quantum-computing product, design-in, supply role, program or partnership, such as a part sold for quantum computers or a named quantum-computer customer. For a maker, it means the company’s own quantum computers or processors. This does not establish revenue, market share, volumes or future sourcing.

Component roleQuantum Control System: RF AWGs, digitizers, converters
EvidenceDisclosed: Keysight’s releases name the Fujitsu–RIKEN 256-qubit computer and AIST’s G-QuAT center as Quantum Control System installations, and its product page lists the modules.
How we knowDisclosed The company’s own filing, release, annual report, product page or investor record describes the quantum-computing role. Where customers are unnamed, the listing says so.
Primary sourceKeysight Technologies — supporting disclosure
Company or official disclosure; vendor claims are attributed to their source.
Checked. This is the research review date, not the source publication or quote time.

Keep in perspective

Keysight does not report quantum revenue; its July 2026 10-Q names quantum computing only among several R&D-driven end markets. The releases name installations, not volumes, prices or module counts, and many labs build controllers from other vendors’ instruments or open-source hardware.

Diversified business exposure. This describes the breadth or role of the business; it is not an investment rating. A quantum-computing product, design-in or partnership does not by itself establish material quantum revenue, market share, or future returns.

Connections to the assembly

These links explain the technology relationship. The model is illustrative and does not represent an actual manufacturer’s bill of materials.

Waveform generators

Arbitrary waveform generators and fast digital-to-analog converters that synthesize the nanosecond pulses of every gate.

Scope of the company links: Keysight sells complete RF AWG modules (four-channel M5300A, DC–16 GHz) in its Quantum Control System, installed in a 256-qubit computer in Japan. Many controllers now synthesize pulses directly with RF data converters: AMD RFSoCs in the open-source QICK and in Zurich Instruments’ QCCS, and Analog Devices AD9082s in QuEL’s QuBE. Tektronix (Ralliant) markets its AWG5200 for superconducting-qubit control without a named customer. Zurich Instruments, Qblox, QuEL, Intermodulation Products and Spectrum Instrumentation are private. Texas Instruments’ bias DACs in QICK set DC flux levels rather than pulses, so TI is mapped under microwave sources instead. QuantumCTek’s ez-Q Engine measurement and control system (8 drive and 2 readout channels per unit) serves the Zuchongzhi superconducting computers, per its own product pages.

Microwave sources & mixers

Local oscillators, synthesizers and IQ mixers that move pulses up to the qubits’ 4–8 gigahertz band and bring the readout signal back down.

Scope of the company links: Keysight’s QCS includes M5201A down converters (2–16 GHz input) alongside AWGs that output directly up to 16 GHz. In QuEL’s QuBE, Analog Devices ADRF6780 mixers and Texas Instruments LMX2594 synthesizers move 1.25–3.25 GHz waveforms up to the 7.25–10 GHz drive band, and QICK’s RF boards use ADI ADF4372 or TI LMX2594 local oscillators. Anritsu positions its signal generators as qubit-control local oscillators, with lab use documented at AIST. Controllers that synthesize microwaves directly need fewer mixers. Zurich Instruments’ SHFSG+ signal generators and QuEL’s front end are private.

Readout digitizers

Fast analog-to-digital converters that capture and demodulate the readout signals, turning them into qubit measurement results.

Scope of the company links: Keysight’s QCS uses M5200A digitizers (four 2 GHz, 12-bit channels) behind M5201A down converters. RF-sampling ADCs increasingly do the job inside controllers: AMD RFSoCs capture readout in QICK and Zurich Instruments’ QCCS, and each AD9082 in QuEL’s QuBE adds two 6 GSPS ADCs. Teledyne SP Devices documents its ADQ digitizers in superconducting-qubit readout research at Royal Holloway, University of London. Zurich Instruments (SHFQA+ analyzers), Qblox, QuEL, Intermodulation Products and Spectrum Instrumentation are private. QuantumCTek’s ez-Q Engine includes readout channels, per its product pages.

Related research

Companies with overlapping sector exposure. Their products and evidence may differ; this is not a list of equivalent investments.

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