2011/07/24 by Matthias Baur, M. Baur, A. Fedorov +8 · 1 citation
Computer Science · Physics and Astronomy · #Cluster state #Entanglement witness #Physics #Quantum #Quantum Computing Algorithms and Architecture #Quantum Information and Cryptography #Quantum Mechanics and Applications #Quantum channel #Quantum computer #Quantum entanglement #Quantum mechanics #Quantum state #Quantum teleportation #Quantum tomography #Qubit #Superdense coding #Teleportation #W state #cond-mat.supr-con #quant-ph
paper · pdf · doi:10.1103/physrevlett.108.040502
published as Phys. Rev. Lett. 108, 040502 (2012) · 4 pages, 4 figures
arxiv created 2011/07/24 · openalex publication_date 2012/01/24 · arxiv updated 2012/08/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Teleportation of a quantum state may be used for distributing entanglement between distant qubits in quantum communication and for quantum computation. Here we demonstrate the implementation of a teleportation protocol, up to the single-shot measurement step, with superconducting qubits coupled to a microwave resonator. Using full quantum state tomography and evaluating an entanglement witness, we show that the protocol generates a genuine tripartite entangled state of all three qubits. Calculating the projection of the measured density matrix onto the basis states of two qubits allows us to reconstruct the teleported state. Repeating this procedure for a complete set of input states we find an average output state fidelity of 86%.