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Coherent phonon dynamics in spatially separated graphene mechanical resonators.


ABSTRACT: Vibrational modes in mechanical resonators provide a promising candidate to interface and manipulate classical and quantum information. The observation of coherent dynamics between distant mechanical resonators can be a key step toward scalable phonon-based applications. Here we report tunable coherent phonon dynamics with an architecture comprising three graphene mechanical resonators coupled in series, where all resonators can be manipulated by electrical signals on control gates. We demonstrate coherent Rabi oscillations between spatially separated resonators indirectly coupled via an intermediate resonator serving as a phonon cavity. The Rabi frequency fits well with the microwave burst power on the control gate. We also observe Ramsey interference, where the oscillation frequency corresponds to the indirect coupling strength between these resonators. Such coherent processes indicate that information encoded in vibrational modes can be transferred and stored between spatially separated resonators, which can open the venue of on-demand phonon-based information processing.

SUBMITTER: Zhang ZZ 

PROVIDER: S-EPMC7084087 | biostudies-literature | 2020 Mar

REPOSITORIES: biostudies-literature

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Coherent phonon dynamics in spatially separated graphene mechanical resonators.

Zhang Zhuo-Zhi ZZ   Song Xiang-Xiang XX   Luo Gang G   Su Zi-Jia ZJ   Wang Kai-Long KL   Cao Gang G   Li Hai-Ou HO   Xiao Ming M   Guo Guang-Can GC   Tian Lin L   Deng Guang-Wei GW   Guo Guo-Ping GP  

Proceedings of the National Academy of Sciences of the United States of America 20200302 11


Vibrational modes in mechanical resonators provide a promising candidate to interface and manipulate classical and quantum information. The observation of coherent dynamics between distant mechanical resonators can be a key step toward scalable phonon-based applications. Here we report tunable coherent phonon dynamics with an architecture comprising three graphene mechanical resonators coupled in series, where all resonators can be manipulated by electrical signals on control gates. We demonstra  ...[more]

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