Simple experimental scheme of teleporting a two-qubit state via linear optical elements
Yuan Hong-Chun(袁洪春)a)b)c)†, Li Heng-Mei(李恒梅)d), and Qi Kai-Guo(齐开国)b)c)ǂ
a Department of Physics, Huaibei Coal Industry Teachers' College, Huaibei 235000, China; b Department of Physics, University of Science and Technology of China, Hefei 230026, Chinac Auhui Key Laboratory of Optoelectronic Science and Technology,Hefei 230026, China; d Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China
Abstract We propose a simple experimental scheme in which an unknown two-qubit state is faithfully and deterministically teleported from Alice to Bob. The scheme is constructed with four photons from parametric down conversion, linear optical elements, and conventional photon detectors, all of which are available in current technology. It is shown that the probability of successful teleportation ideally reaches 100% based on single-photon two-qubit-assisted Bell-state measurement, which can distinguish all four Bell-states simultaneously via conventional photon detectors. By generalizing the scheme, the teleportation of an unknown multi-qubit system can also be realized.
Received: 17 October 2005
Revised: 04 December 2005
Accepted manuscript online:
PACS:
03.67.Lx
(Quantum computation architectures and implementations)
Fund: Project supported by the Anhui Key Laboratory of Green Material Chemistry (Grant No KLSF(I)02).
Cite this article:
Yuan Hong-Chun(袁洪春), Li Heng-Mei(李恒梅), and Qi Kai-Guo(齐开国) Simple experimental scheme of teleporting a two-qubit state via linear optical elements 2006 Chinese Physics 15 1686
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