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Research Highlight | Materials Science Division

Quantum control of surface acoustic wave phonons

In a study published in Nature, researchers demonstrate precise, programmable quantum control is essential to a range of applications of surface acoustic waves in the quantum limit, including the coupling of disparate quantum systems.

Scientific Achievement

A superconducting qubit is used to quantum control and measure quantum states of surface acoustic wave (SAW) phonons in a SAW resonator.

Significance and Impact

The work offers a straightforward approach to emit, detect, and manipulate quantum states of acoustic waves on the surface of solids.

Research Details

  • Method to integrate surface acoustic wave devices with superconducting qubits.
  • Qubit used to probe surface acoustic wave device microwave response at millikelvin temperatures.
  • Qubit can deterministically swap quantum excitation into SAW resonator and generate superposed quantum states.
  • Qubit can measure Wigner tomogram of SAW quantum states.

DOI: https://​doi​.org/​10​.​1038​/​s​41586​-​018​-​0719-5

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