QuiX Quantum Develops Control Unit for Photonic Quantum Computer

QuiX Quantum installs first Feed-Forward Control Unit for photonic quantum computing.

Dutch company QuiX Quantum has installed the first Feed-Forward Control Unit (FFCU) system designed to manage a photonic quantum computer.

The FFCU is part of an automatic navigation mechanism that predicts future errors and adjusts the control signal in advance, without waiting for them to occur. Unlike feedback systems, this solution acts proactively.

In this case, the system receives signals from single-photon detectors and converts the measurement results into commands for photonic integrated circuits.

This logic is crucial for measurement-based quantum computing. In this architecture, calculations proceed through a sequence where the result of one operation can determine subsequent steps.

According to representatives of QuiX Quantum, the FFCU is part of the overall stack of the photonic quantum system, alongside photon generation, multiplexing, state preparation, measurement, and control of the photonic assembly.

The current system uses two FPGA modules connected by a high-speed, low-latency bus. The stated features include 32 inputs, 32 outputs, and a delay of about 150 ns between the detector input signal and the settled output voltage.

Andrew Roos, Vice President of Research and Development at QuiX Quantum, stated that a fast FFCU mechanism is necessary for universal photonic quantum computing, as the system must detect a signal, make a decision, and reconfigure the optical path in real-time within a very short period.

QuiX Quantum CEO Stefan Hengsbach described the FFCU as a step towards creating a complete system stack that should not only generate and measure photons but also control them in real-time.

The company did not disclose the installation location or the customer.

In May, scientists from ETH Zurich developed a method for creating mathematically flawless randomness. The technology addresses the vulnerability of digital systems and cryptography.