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High-frequency cavity optomechanics using bulk acoustic phonons.

Prashanta Kharel1, Glen I Harris2, Eric A Kittlaus1

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This summary is machine-generated.

Researchers developed macroscopic optomechanical systems for quantum operations, overcoming microscale heating issues. These systems utilize high-frequency phonons for robust ground-state operation and future quantum technologies.

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Area of Science:

  • Quantum optics
  • Optomechanics
  • Acoustic systems

Background:

  • Microscale and nanoscale optomechanical systems enable quantum operations via high-frequency phonon modes.
  • However, light absorption causes heating, hindering robust ground-state operation in microstructures.

Purpose of the Study:

  • To demonstrate an alternative strategy for accessing high-frequency phonons in macroscopic systems.
  • To explore robust ground-state operation in centimeter-scale systems.

Main Methods:

  • Utilizing phase-matched Brillouin interactions between two distinct optical cavity modes.
  • Employing macroscopic systems with significantly larger motional masses compared to microscale counterparts.

Main Results:

  • Successfully accessed 13 GHz phonons in centimeter-scale systems.
  • Demonstrated optomechanically induced amplification/transparency and parametric instability of bulk phonon modes.

Conclusions:

  • Macroscopic systems offer a complementary path to robust ground-state operation in optomechanics.
  • These findings are crucial for quantum memories, microwave-to-optical conversion, and high-power lasers.