The Qubit Readout Module (QRM) is specifically engineered for precise readout pulse generation and signal acquisition in the baseband regime from DC to 400 MHz. By replacing the roles of conventional pulse generators, digitizers, and readout analyzers, the QRM combines measurement workflows within one module.
Readout pulses are generated on the fly with real‑time parametrization, which integrates waveform playback, gain and offset control, NCO‑based modulation, and optional mixer‑correction. Incoming signals are processed on the module through a flexible acquisition path that supports scope‑mode capture, TTL‑based trigger counting, and full complex demodulation with integration, weighting, rotation, and thresholding. This architecture enables accurate envelope extraction for dispersive readout, independent of whether the experiment monitors transmitted or reflected signals. Waveform memories, integration weights, and demodulation parameters can be uploaded to tailor the readout chain to device‑specific conditions, suppress crosstalk, and maintain fidelity under dynamic operating regimes. With capacity for up to 3 million IQ shots per module, the QRM provides a unified, high‑performance platform for scalable qubit measurement.
The Qubit Readout Module (QRM) operates within the Qblox Cluster mainframe, offering seamless integration and scalability. A single 19” rack Cluster unit can accommodate up to 20 QRM modules, providing density for up to 40 output and 40 input baseband channels.
Qblox’s modular architecture allows interoperability between the QRM and other modules, including the Qubit Readout RF Module (QRM-RF), Qubit Control Modules (QCM and QCM‑RF II), Qubit Readout and Control (QRC), and the Qubit Timetag Module (QTM).
Using the proprietary SYNQ and LINQ interconnect protocols, all modules communicate and run in synchrony. This architecture ensures precise alignment of control, readout, and processing, allowing users to configure a control stack that matches their quantum system and supports high‑fidelity operation.
“ As we build integrated multimodal quantum data centers and connect quantum processors directly with HPC infrastructures, transparent, low-level hardware control is essential to delivering scalable, hybrid quantum–classical computing environments. Qblox enables this level of hardware control through Q1ASM, giving us at Qilimanjaro the precision and flexibility needed to advance our analog and digital QPUs."
“ Since 2021, Qblox has been a vitalpartner in our mission to build a 100-qubitquantum computer for Swedish industry.Their robust, scalable control systemdelivers outstanding analog performance,allowing us to push quantum boundarieswithout hardware limitations. Withunparalleled channel synchronizationand fast real-time feedback, we can fullytune up our 20-qubit systems in under 30minutes."
“Since 2022, Qblox has been a trustworthy partner, providing the qubit-agnostic control electronics essential to our vision. Their Cluster’s SYNQ & LINQ protocols enabled the ultra-low latency required for our fast, parallel qubit characterization. We highly recommend Qblox for their professionalism and innovative approach to quantum computing challenges.'
“ Qblox cluster is certainly one of the most important elements in our new spin qubit lab. The easy-to-use and compact system allows us to set up a spin qubit control system within a couple of hours. We have used it for the RF reflectometry readout of our first in-house quantum dot! I look forward to getting more exciting results by using the Qblox cluster. What I also appreciate is the good communication and friendship between Qblox and the customers."
“ The Qblox control stack has transformed our lab by replacing four separate pieces of equipment with a single, integrated 'blue box'. By combining RF/MW generation with coincidence detection and timetagging, our students achieve results faster. Combined with their excellent, fast-response support, Qblox is essential for our state-of-the-art research."
“ Qblox support team’s expertise and quick response to our queries exceeded my expectations, making the setup process a breeze. Their continuous support allows our PhDs and postdocs to excel in their measurements without worrying about the control electronics. I’m very impressed by Qblox’s commitment to supporting their products and their users."
“The QTM delivers state-of-the-art performance for field-deployed quantum communication. It stands out through its immediate reconfiguration via a Python API and seamless integration with the Qblox Cluster. This allows for full orchestration of quantum memories and photon sources—all within a single, unified setup."
“ I've been impressed by the technical background and helpful attitude of the team we have supporting us. They are always fast to respond, really helpful and give thoughtful answers. It's fantastic."
“ Qblox support team's expertise and quick response to our queries exceeded my expectations, making the setup process a breeze. Their continuous support allows our PhDs and postdocs to excel in their measurements without worrying about the control electronics. I’m very impressed by Qblox’s commitment to supporting their products and their users."
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