Dutch company QuiX Quantum has installed its first Feed-Forward Control Unit (FFCU) 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, rather than 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 measurement results into commands for photonic integrated circuits.
This logic is crucial for measurement-oriented quantum computing. In this architecture, calculations are performed in a sequence where the result of one operation can dictate subsequent steps.
According to QuiX Quantum representatives, the FFCU is part of the overall stack of the photonic quantum system, which includes photon generation, multiplexing, state formation, measurement, and control of the photonic assembly.
The current system utilizes two FPGA modules connected by a high-speed, low-latency bus. The specifications include 32 inputs, 32 outputs, and a delay of about 150 ns between the detector input signal and the stabilized output voltage.
QuiX Quantum's Vice President of Research and Development, Andrew Roos, stated that the fast FFCU mechanism is essential for universal photonic quantum computing, as the system must detect the signal, make a decision, and reconfigure the optical path in real-time within a very short timeframe.
QuiX Quantum's CEO, Stefan Hengesbach, described the FFCU as a step towards creating a complete system stack that not only generates and measures photons but also manages them in real-time.
The company did not disclose the installation location or the client.
As a reminder, in May, scientists from the Swiss Federal Institute of Technology Zurich developed a method for creating mathematically perfect randomness. This technology addresses vulnerabilities in digital systems and cryptography.