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  3. Deterministic Generation Of Frequency-bin-encoded Microwave Photons.
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  3. Deterministic Generation Of Frequency-bin-encoded Microwave Photons.

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Generation and Coherent Control of Pulsed Quantum Frequency Combs
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Deterministic Generation of Frequency-Bin-Encoded Microwave Photons.

Jiaying Yang1,2, Maryam Khanahmadi1, Ingrid Strandberg1

  • 1Chalmers University of Technology, Department of Microtechnology and Nanoscience, SE-412 96 Göteborg, Sweden.

Physical Review Letters
|July 31, 2025

View abstract on PubMed

Summary
This summary is machine-generated.

Researchers developed a frequency-bin encoding method for quantum communication. This technique reliably transfers quantum information between superconducting qubits, detecting photon loss for enhanced distributed quantum computing.

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Area of Science:

  • Quantum Information Science
  • Superconducting Circuits
  • Quantum Communication Networks

Background:

  • Distributed quantum computing necessitates reliable quantum communication channels.
  • Superconducting circuits use microwave photons for quantum information transfer.
  • Photon loss in transmission is a major challenge for quantum networks.

Purpose of the Study:

  • To propose and demonstrate a heralded protocol for detecting photon loss in quantum communication.
  • To implement a frequency-bin encoding method for microwave photonic modes.
  • To enhance the reliability and accuracy of quantum state transfer in distributed quantum computing networks.

Main Methods:

  • Developed a frequency-bin encoding protocol for microwave photons.
  • Used superconducting circuits to deterministically encode quantum information from a qubit.
  • Simultaneously emitted qubit information into two distinct frequency photonic modes.

    • Main Results:

    • Achieved a process fidelity of 94.9% for quantum information encoding.
    • Demonstrated the ability to detect photon loss using frequency-bin-encoded photonic modes.
    • Successfully implemented a reliable quantum state transfer method.

    Conclusions:

    • The frequency-bin encoding protocol provides a robust method for quantum state transfer.
    • Error detection via photon loss detection significantly enhances distributed quantum computing performance.
    • This work offers a reliable approach for building high-fidelity quantum communication channels.