Scalable Photonic Control System for Large-Scale Quantum Computers
ORAL
Abstract
Scaling quantum computers to millions of qubits requires a control architecture that overcomes the thermal, noise, and bandwidth limits of conventional electronics [1, 2]. Viqthor’s photonic control system (PCS) tackles these challenges, enabling precise qubit control with high signal fidelity at cryogenic temperatures down to 4 K. The PCS includes Menthor, an RFoF transmitter, and IceQube, an optical-to-RF converter, designed for large scalable quantum computing [3].
We present experimental results demonstrating the PCS’s capability to control solid-state qubits. Menthor operates over a frequency range from 10 MHz to 18 GHz and supports 8 RF inputs and 8 optical outputs to deliver RF‑modulated light at 1550 nm into the cryogenic chamber. The IceQube at 4 K receives optical signals through cryo-rated fibers and efficiently converts them into RF signals from 10 MHz to 18 GHz. Our preliminary cryo-photonic tests show low noise, minimal heat dissipation with excellent mechanical and electrical stability including linear optic-RF conversion with flat frequency response across varying bias and input conditions. Combined with Viqthor’s Mimothor, the PCS enables massively scalable full stack end-to-end quantum control solution for large-scale quantum computing.
References:
1. S. Krinner et al., EPJ Quantum Technol. 6, 2 (2019)
2. P. Krantz et al., Appl. Phys. Rev. 6 (2019)
3. Xiu Gu et al., Physics Reports (2017)
We present experimental results demonstrating the PCS’s capability to control solid-state qubits. Menthor operates over a frequency range from 10 MHz to 18 GHz and supports 8 RF inputs and 8 optical outputs to deliver RF‑modulated light at 1550 nm into the cryogenic chamber. The IceQube at 4 K receives optical signals through cryo-rated fibers and efficiently converts them into RF signals from 10 MHz to 18 GHz. Our preliminary cryo-photonic tests show low noise, minimal heat dissipation with excellent mechanical and electrical stability including linear optic-RF conversion with flat frequency response across varying bias and input conditions. Combined with Viqthor’s Mimothor, the PCS enables massively scalable full stack end-to-end quantum control solution for large-scale quantum computing.
References:
1. S. Krinner et al., EPJ Quantum Technol. 6, 2 (2019)
2. P. Krantz et al., Appl. Phys. Rev. 6 (2019)
3. Xiu Gu et al., Physics Reports (2017)
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Publication: A. Amsanpally et al., Scalable Photonic Control System for Large Scale Quantum Computers (submitted)
Presenters
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Abhilash Amsanpally
- Viqthor