Coherent phonon dynamics in spatially separated graphene mechanical resonators
Abstract
The rapid development of nanotechnologies enables the possibility to use long-lifetime vibrational phonon modes for classical and quantum information processing. Despite continuous efforts in the past decade, tunable phonon-mediated transferring and processing of information between distant phonon modes remains technically challenging. Taking advantage of the excellent electronic and mechanical properties of graphene, we are able to realize electrically tunable coherent phonon dynamics between spatially separated graphene mechanical resonators. The gate-controllable resonant frequencies, coupling strengths, and coherent phonon dynamics indicate that information encoded in vibrational modes can be stored, transferred, and manipulated between spatially separated resonators. Our results not only demonstrate the transfer of information between phonons, but also provide the building blocks toward scalable phonon-based information processing.
- Publication:
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Proceedings of the National Academy of Science
- Pub Date:
- March 2020
- DOI:
- 10.1073/pnas.1916978117
- arXiv:
- arXiv:1909.11311
- Bibcode:
- 2020PNAS..117.5582Z
- Keywords:
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- Condensed Matter - Mesoscale and Nanoscale Physics;
- Condensed Matter - Materials Science
- E-Print:
- Proc. Nat. Acad. Sci. USA (first published March 2, 2020)