%0 Journal Article
%T Observation of eight-photon entanglement
%A Yao, Xing-Can
%A Wang, Tian-Xiong
%A Xu, Ping
%A Lu, He
%A Pan, Ge-Sheng
%A Bao, Xiao-Hui
%A Peng, Cheng-Zhi
%A Lu, Chao-Yang
%A Chen, Yu-Ao
%A Pan, Jian-Wei
%J Nature Photonics
%D 2012
%V 6
%N 4
%F Yao_etal2012
%O exported from refbase (https://db.rplab.ru/refbase/show.php?record=784), last updated on Mon, 07 May 2012 21:12:55 -0500
%X The creation of increasingly large multipartite entangled states is not only a fundamental scientific endeavour in itself, but is also the enabling technology for quantum information. Tremendous experimental effort has been devoted to generating multiparticle entanglement with a growing number of qubits. So far, up to six spatially separated single photons have been entangled based on parametric downconversion. Multiple degrees of freedom of a single photon have been exploited to generate forms of hyper-entangled states. Here, using new ultra-bright sources of entangled photon pairs, an eight-photon interferometer and post-selection detection, we demonstrate for the first time the creation of an eight-photon Schrödinger cat state with genuine multipartite entanglement. The ability to control eight individual photons represents a step towards optical quantum computation, and will enable new experiments on, for example, quantum simulation, topological error correction and testing entanglement dynamics under decoherence.
%K fromIPMRAS
%P 225-228