## Abstract

Realizing robust quantum information transfer between long-lived qubit registers is a key challenge for quantum information science and technology. Here we demonstrate unconditional teleportation of arbitrary quantum states between diamond spin qubits separated by 3 meters. We prepare the teleporter through photon-mediated heralded entanglement between two distant electron spins and subsequently encode the source qubit in a single nuclear spin. By realizing a fully deterministic Bell-state measurement combined with real-time feed-forward, quantum teleportation is achieved upon each attempt with an average state fidelity exceeding the classical limit. These results establish diamond spin qubits as a prime candidate for the realization of quantum networks for quantum communication and network-based quantum computing.

Original language | English (US) |
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Pages (from-to) | 532-535 |

Number of pages | 4 |

Journal | Science |

Volume | 345 |

Issue number | 6196 |

DOIs | |

State | Published - Aug 1 2014 |

Externally published | Yes |

## ASJC Scopus subject areas

- General