Benchmarking a Teleportation Protocol realized in Superconducting Circuits

Autor:	Baur, M., Fedorov, A., Steffen, L., Filipp, S., da Silva, M. P., Wallraff, A.
Rok vydání:	2011
Předmět:	Quantum Physics Condensed Matter - Superconductivity
Zdroj:	Phys. Rev. Lett. 108, 040502 (2012)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.108.040502
Popis:	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 88%. Comment: 4 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1107.4774 Zobrazit plný text záznamu View this record from Arxiv