Phonon Laser in the Quantum Regime

We demonstrate a trapped-ion system with two competing dissipation channels, implemented independently on two ion species cotrapped in a Paul trap. By controlling coherent spin-oscillator couplings and optical pumping rates we explore the phase diagram of this system, which exhibits a regime analogo...

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Bibliographic Details
Published inPhysical review letters Vol. 131; no. 4; p. 043605
Main Authors Behrle, T, Nguyen, T L, Reiter, F, Baur, D, de Neeve, B, Stadler, M, Marinelli, M, Lancellotti, F, Yelin, S F, Home, J P
Format Journal Article
LanguageEnglish
Published United States 28.07.2023
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Summary:We demonstrate a trapped-ion system with two competing dissipation channels, implemented independently on two ion species cotrapped in a Paul trap. By controlling coherent spin-oscillator couplings and optical pumping rates we explore the phase diagram of this system, which exhibits a regime analogous to that of a (phonon) laser but operates close to the quantum ground state with an average phonon number of n[over ¯]<10. We demonstrate phase locking of the oscillator to an additional resonant drive, and also observe the phase diffusion of the resulting state under dissipation by reconstructing the quantum state from a measurement of the characteristic function.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.131.043605