Coherent Phonon Rabi Oscillations with a High-Frequency Carbon Nanotube Phonon Cavity.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 28068098.
- Also identified by DOI 10.1021/acs.nanolett.6b04223.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
Phonon-cavity electromechanics allows the manipulation of mechanical oscillations similar to photon-cavity systems. Many advances on this subject have been achieved in various materials. In addition, the coherent phonon transfer (phonon Rabi oscillations) between the phonon cavity mode and another oscillation mode has attracted many interest in nanoscience. Here, we demonstrate coherent phonon transfer in a carbon nanotube phonon-cavity system with two mechanical modes exhibiting strong dynamical coupling. The gate-tunable phonon oscillation modes are manipulated and detected by extending the red-detuned pump idea of photonic cavity electromechanics. The first- and second-order coherent phonon transfers are observed with Rabi frequencies 591 and 125 kHz, respectively. The frequency quality factor product fQ<sub>m</sub> ∼ 2 × 10<sup>12</sup> Hz achieved here is larger than k<sub>B</sub>T<sub>base</sub>/h, which may enable the future realization of Rabi oscillations in the quantum regime.