Quantum teleportation, the faithful transfer of an unknown input state onto a remote quantum system1, is a key component in long-distance quantum communication protocols2 and distributed quantum computing3,4. At the same time, high-frequency nano-optomechanical systems5 hold great promise as nodes in a future quantum network6, operating on-chip at low-loss optical telecom wavelengths with long mechanical lifetimes. Recent demonstrations include entanglement between two resonators7, a quantum memory8 and microwave-to-optics transduction9,10,11. Despite these successes, quantum teleportation of an optical input state onto a long-lived optomechanical memory is an outstanding challenge. Here we demonstrate quantum teleportation of a polarization-encoded optical input state onto the joint state of a pair of nanomechanical resonators. Our protocol also allows to store and retrieve an arbitrary qubit state onto a dual-rail encoded optomechanical quantum memory. This work demonstrates the full functionality of a single quantum repeater node and presents a key milestone towards applications of optomechanical systems as quantum network nodes.
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Source data for the plots are available via Zenodo at https://doi.org/10.5281/zenodo.5079912.
The QuTiP code used for the simulations in the Supplementary Information is available at https://github.com/GroeblacherLab/Optomechanical_Quantum_Teleportation.
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We would like to thank K. Hammerer and R. Stockill for valuable discussions. This work is supported by the Foundation for Fundamental Research on Matter (FOM) Projectruimte grant (16PR1054), the European Research Council (ERC StG Strong-Q, 676842 and ERC CoG Q-ECHOS, 101001005) and by the Netherlands Organization for Scientific Research (NWO/OCW), as part of the Frontiers of Nanoscience programme, as well as through Vidi (680-47-541/994) and Vrij Programma (680-92-18-04) grants. R.B. and T.P.M.A. acknowledge funding from the Fundação de Amparo à Pesquisa do Estado de São Paulo (2019/01402-1, 2016/18308-0, 2018/15580-6 and 2018/25339-4) and from the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (Finance Code 001). B.H. also acknowledges funding from the European Union under a Marie Skłodowska-Curie COFUND fellowship.
The authors declare no competing interests.
Peer review information Nature Photonics thanks the anonymous reviewers for their contribution to the peer review of this work.
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Fiaschi, N., Hensen, B., Wallucks, A. et al. Optomechanical quantum teleportation. Nat. Photon. 15, 817–821 (2021). https://doi.org/10.1038/s41566-021-00866-z
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