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Related Experiment Videos

Mechanical on-chip microwave circulator.

S Barzanjeh1, M Wulf2, M Peruzzo2

  • 1Institute of Science and Technology Austria, 3400, Klosterneuburg, Austria. shabir.barzanjeh@ist.ac.at.

Nature Communications
|October 18, 2017
PubMed
Summary
This summary is machine-generated.

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Researchers developed a novel magnetic-free circulator using engineered electromechanic interactions. This on-chip device offers a new path for advanced signal processing in quantum computing and communication systems.

Area of Science:

  • Quantum Engineering
  • Solid State Physics
  • Microwave Engineering

Background:

  • Nonreciprocal circuit elements are crucial for modern measurement and communication systems.
  • Traditional methods for breaking time-reversal symmetry often rely on magnetic materials.
  • Alternative approaches include the quantum Hall effect, parametric modulation, and Josephson nonlinearities.

Purpose of the Study:

  • To demonstrate a novel on-chip, magnetic-free circulator.
  • To achieve nonreciprocal signal circulation using engineered electromechanic interactions.
  • To explore applications in superconducting qubit processors and silicon photonics.

Main Methods:

  • Utilizing reservoir-engineered electromechanic interactions.
  • Implementing controlled phase-sensitive interference across six distinct electro-mechanical signal conversion paths.

Related Experiment Videos

  • Fabricating the device on a silicon-on-insulator platform.

    • Main Results:

    • Demonstrated a compact, magnetic-free circulator with directional circulation.
    • Achieved noise performance close to the quantum limit.
    • Exhibited a tunable bandwidth of up to 30 MHz and high dynamic range.

    Conclusions:

    • The developed circulator is compatible with superconducting qubits and silicon photonics.
    • Its reconfigurability as a beam splitter or wavelength converter offers advanced on-chip signal processing capabilities.
    • This technology could significantly advance multiplexed signal processing and readout for superconducting qubit processors.