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Mechanically Mediated Microwave Frequency Conversion in the Quantum Regime.

F Lecocq1, J B Clark1, R W Simmonds1

  • 1National Institute of Standards and Technology, 325 Broadway, Boulder, Colorado 80305, USA.

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Summary
This summary is machine-generated.

Researchers demonstrate efficient, low-noise microwave frequency conversion using optomechanics. This breakthrough enables high-fidelity quantum state transduction and photon routing for quantum networks.

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Area of Science:

  • Quantum physics
  • Optomechanics
  • Microwave engineering

Background:

  • Quantum information processing relies on efficient manipulation of quantum states.
  • Frequency conversion is crucial for interfacing quantum systems operating at different frequencies.
  • Optomechanical systems offer a promising platform for mediating interactions between light and mechanical motion.

Purpose of the Study:

  • To demonstrate efficient and low-noise frequency conversion between microwave modes.
  • To explore the application of optomechanical systems in quantum state transduction.
  • To investigate the use of optomechanical converters as tunable beam splitters for quantum networks.

Main Methods:

  • Utilizing radiation pressure on a mechanical resonator to mediate frequency conversion.
  • Achieving coherent conversion of microwave photons.
  • Characterizing conversion efficiency, bandwidth, and added noise.

Main Results:

  • Demonstrated coherent conversion of over 10^12 photons/s with 95% efficiency and 14 kHz bandwidth.
  • Achieved low added noise (< 10^-1 photons·s^-1·Hz^-1).
  • Showcased the device's operation as a tunable beam splitter.

Conclusions:

  • The developed optomechanical frequency converter is highly efficient and low-noise, suitable for quantum state transduction.
  • The tunable beam splitter capability opens avenues for photon routing in complex quantum networks.
  • This work advances the development of essential components for quantum communication and computation.