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Efficient bidirectional piezo-optomechanical transduction between microwave and optical frequency.

Wentao Jiang1, Christopher J Sarabalis2, Yanni D Dahmani2

  • 1Department of Applied Physics and Ginzton Laboratory, Stanford University, 348 Via Pueblo Mall, Stanford, CA, 94305, USA. wentao@stanford.edu.

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|March 5, 2020
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Summary

Researchers developed a novel piezo-optomechanical transducer for efficient microwave-to-optical information conversion. This device significantly improves conversion efficiency, paving the way for advanced quantum information technologies.

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Area of Science:

  • Quantum Information Science
  • Optomechanics
  • Materials Science

Background:

  • Efficient conversion between microwave and optical frequencies is crucial for quantum information processing.
  • Optomechanical systems offer high potential for this conversion but face challenges like low efficiency and interaction rates.

Purpose of the Study:

  • To develop an on-chip piezo-optomechanical transducer that overcomes limitations in current optomechanical systems.
  • To significantly enhance the efficiency of microwave-to-optical information conversion.

Main Methods:

  • Demonstration of an on-chip piezo-optomechanical transducer.
  • Utilizing gigahertz-frequency mechanical devices with high optomechanical response.
  • Characterization of acousto-optic modulation and bidirectional conversion efficiency.

Main Results:

  • Achieved nearly three orders of magnitude improvement in conversion efficiency.
  • Demonstrated acousto-optic modulation with 0.02 V.
  • Showcased bidirectional conversion efficiency of -43 dB and -47 dB with different optical pump powers.

Conclusions:

  • The developed transducer systematically addresses key challenges in optomechanical conversion.
  • Further investigation at millikelvin temperatures is needed to explore quantum transduction limits and noise.
  • This work represents a significant advancement towards efficient classical and quantum information interconversion.