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Quantum Regime of a Two-Dimensional Phonon Cavity
Aleksey N Bolgar1, Julia I Zotova1, Daniil D Kirichenko1
1Moscow Institute of Physics and Technology, Institutskiy Pereulok 9, Dolgoprudny 141701, Russia.
Physical Review Letters
|June 16, 2018
Summary
Researchers achieved the quantum regime in surface acoustic wave (SAW) resonators by coupling them with superconducting artificial atoms. This breakthrough enables quantum phenomena studies with phonons, advancing on-chip quantum electronics.
Area of Science:
- Quantum physics
- Condensed matter physics
- Acoustics
Background:
- Surface acoustic wave (SAW) resonators are typically macroscopic devices.
- Achieving the quantum regime in SAW devices is challenging due to their complex structure.
- Superconducting artificial atoms offer a promising platform for quantum interactions.
Purpose of the Study:
- To demonstrate the quantum regime of a SAW resonator.
- To explore the interaction between SAW phonons and superconducting artificial atoms.
- To pave the way for quantum analogues of optical phenomena using phonons.
Main Methods:
- Fabrication of SAW resonators with superconducting artificial atoms.
- Experimental observation of vacuum Rabi mode splitting.
- Utilizing the strong coupling regime between phonons and artificial atoms.
Main Results:
- Successful realization of the quantum regime in a SAW resonator.
- Observation of vacuum Rabi mode splitting, a hallmark of strong coupling.
- Demonstrated interaction between surface acoustic wave phonons and a superconducting artificial atom.
Conclusions:
- The study successfully achieved the quantum regime in SAW resonators.
- This work opens new avenues for quantum acoustics and on-chip quantum electronics.
- It provides a platform for exploring quantum phenomena with phonons, analogous to quantum optics.
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