Quantum Regime of a Two-Dimensional Phonon Cavity

Aleksey N Bolgar; Julia I Zotova; Daniil D Kirichenko; Ilia S Besedin; Aleksander V Semenov; Rais S Shaikhaidarov; Oleg V Astafiev

doi:10.1103/PhysRevLett.120.223603

Quantum Regime of a Two-Dimensional Phonon Cavity

Phys Rev Lett. 2018 Jun 1;120(22):223603. doi: 10.1103/PhysRevLett.120.223603.

Authors

Aleksey N Bolgar¹, Julia I Zotova¹, Daniil D Kirichenko¹, Ilia S Besedin², Aleksander V Semenov^{1

3}, Rais S Shaikhaidarov^{1

4}, Oleg V Astafiev^{1

4

5}

Affiliations

¹ Moscow Institute of Physics and Technology, Institutskiy Pereulok 9, Dolgoprudny 141701, Russia.
² National University for Science and Technology (MISiS), Leninskiy Pereulok 4, Moscow 119049, Russia.
³ Moscow State Pedagogical University, Malaya Pirogovskaya Street 1/1, Moscow 119435, Russia.
⁴ Royal Holloway, University of London, Egham Surrey TW20 0EX, United Kingdom.
⁵ National Physical Laboratory, Teddington, TW11 0LW, United Kingdom.

PMID: 29906147
DOI: 10.1103/PhysRevLett.120.223603

Abstract

We realize the quantum regime of a surface acoustic wave (SAW) resonator by demonstrating vacuum Rabi mode splitting due to interaction with a superconducting artificial atom. Reaching the quantum regime is physically difficult and technologically challenging since SAW devices consist of large arrays of narrow metal strips. This work paves the way for realizing analogues of quantum optical phenomena with phonons and can be useful in on-chip quantum electronics.