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arXiv · 2104.02080

Optomechanical quantum teleportation

Niccolò Fiaschi·Bas Hensen·Andreas Wallucks·Rodrigo Benevides·Jie Li·Thiago P. Mayer Alegre·Simon Gröblacher
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Abstract

Quantum teleportation, the faithful transfer of an unknown input state onto a remote quantum system, is a key component in long distance quantum communication protocols and distributed quantum computing. At the same time, high frequency nano-optomechanical systems hold great promise as nodes in a future quantum network, operating on-chip at low-loss optical telecom wavelengths with long mechanical lifetimes. Recent demonstrations include entanglement between two resonators, a quantum memory and microwave to optics transduction. 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 for the first time 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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quant-phcond-mat.mes-hallphysics.optics

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Niccolò Fiaschi, Bas Hensen, Andreas Wallucks, Rodrigo Benevides, Jie Li, Thiago P. Mayer Alegre, Simon Gröblacher. 2021-04-05. Optomechanical quantum teleportation. https://doi.org/10.1038/s41566-021-00866-z

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