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Scaling quantum computers require control systems that are both high-performance and cryogenically efficient. Traditional microwave-based electronics face limitations in such environments due to heat generation, signal loss, and electromagnetic interference. To address these challenges, we present a fully photonic control architecture based on Viqthor’s Menthor, a multi-channel RF-over-Fiber (RFoF) transmitter designed for quantum computing applications. Menthor converts microwave signals up to 18 GHz into optical signals, transmitting them over single-mode fiber to minimize thermal load and signal degradation. Paired with IceQube, a cryo-compatible multi-channel microwave converter, the system enables reliable signal recovery directly within dilution refrigerators at temperatures as low as 55 K. Experimental results demonstrate low relative intensity noise (RIN), high dynamic range, and flat frequency response, ensuring high-fidelity control of quantum operations. This platform establishes a scalable, fiber-based approach for high-density qubit control, representing a significant advancement toward next-generation quantum processors.

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Scalable Photonic Control System for Large Scale Quantum Computers

  • 会议论文

  • 发表日期：

    2026年

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  • Abhilash Amsanpally,
  • Maeva Franco,
  • Arnaud Perrin,
  • Jérémie Theze,
  • Dana El Hajj,
  • Guillaume De Giovanni

摘要

Scaling quantum computers require control systems that are both high-performance and cryogenically efficient. Traditional microwave-based electronics face limitations in such environments due to heat generation, signal loss, and electromagnetic interference. To address these challenges, we present a fully photonic control architecture based on Viqthor’s Menthor, a multi-channel RF-over-Fiber (RFoF) transmitter designed for quantum computing applications. Menthor converts microwave signals up to 18 GHz into optical signals, transmitting them over single-mode fiber to minimize thermal load and signal degradation. Paired with IceQube, a cryo-compatible multi-channel microwave converter, the system enables reliable signal recovery directly within dilution refrigerators at temperatures as low as 55 K. Experimental results demonstrate low relative intensity noise (RIN), high dynamic range, and flat frequency response, ensuring high-fidelity control of quantum operations. This platform establishes a scalable, fiber-based approach for high-density qubit control, representing a significant advancement toward next-generation quantum processors.