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Tuning Sound Waves on Chip

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The researchers harnessed the unique properties of lithium niobate to build an on-chip electro-acoustic modulator to control the acoustic waves propagating in on-chip waveguides. By applying an electric field, the modulator can control the phase, amplitud

Credit: Linbo Shao/Harvard SEAS

Harvard University researchers have shown that acoustic waves can be controlled and modulated with an electric field on chip.

The researchers developed an on-chip electro-acoustic modulator using lithium niobate.

The modulator can control the phase, amplitude, and frequency of acoustic waves on chip by applying an electric field, moving a step closer to building an acoustic integrated circuit.

Said researcher Linbo Shao, "Our work paves the way for high-performance acoustic-wave based devices and circuits for next-generation microwave signal processing, as well as on-chip quantum networks and interfaces linking different types of quantum systems, including solid-state atomic systems and superconducting qubits."

From Harvard University John A. Paulson School of Engineering and Applied Sciences
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