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.
journal_name
Proc Natl Acad Sci U S Aauthors
Zhang ZZ,Song XX,Luo G,Su ZJ,Wang KL,Cao G,Li HO,Xiao M,Guo GC,Tian L,Deng GW,Guo GPdoi
10.1073/pnas.1916978117subject
Has Abstractpub_date
2020-03-17 00:00:00pages
5582-5587issue
11eissn
0027-8424issn
1091-6490pii
1916978117journal_volume
117pub_type
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