%0 Journal Article
%T Experimental quantum teleportation of a two-qubit composite system
%A Zhang, Qiang
%A Goebel, Alexander
%A Wagenknecht, Claudia
%A Chen, Yu-Ao
%A Zhao, Bo
%A Yang, Tao
%A Mair, Alois
%A Schmiedmayer, Jörg
%A Pan, Jian-Wei
%J Nature Physics
%D 2006
%V 2
%N 10
%F Zhang_etal2006
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=795), last updated on Wed, 09 May 2012 11:33:41 -0500
%X Quantum teleportation, a way to transfer the state of a quantum system from one location to another, is central to quantum communication and plays an important role in a number of quantum computation protocols. Previous experimental demonstrations have been implemented with single photonic or ionic qubits. However, teleportation of single qubits is insufficient for a large-scale realization of quantum communication and computation. Here, we present the experimental realization of quantum teleportation of a two-qubit composite system. In the experiment, we develop and exploit a six-photon interferometer to teleport an arbitrary polarization state of two photons. The observed teleportation fidelities for different initial states are all well beyond the state estimation limit of 0.40 for a two-qubit system. Not only does our six-photon interferometer provide an important step towards teleportation of a complex system, it will also enable future experimental investigations on a number of fundamental quantum communication and computation protocols
%K fromIPMRAS
%K quantum teleportation
%P 678-682