中国物理B ›› 2006, Vol. 15 ›› Issue (8): 1686-1689.doi: 10.1088/1009-1963/15/8/008

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Simple experimental scheme of teleporting a two-qubit state via linear optical elements

齐开国1, 袁洪春2, 李恒梅3   

  1. (1)Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China; (2)Department of Physics, Huaibei Coal Industry Teachers' College,Huaibei 235000, China;Department of Physics, University of Science and Technology of China, Hefei 230026, China;Auhui Key Laboratory of Optoelectronic Science and Technology,Hefei 230026, Chin; (3)Department of Physics, University of Science and Technology of China, Hefei 230026, China;Auhui Key Laboratory of Optoelectronic Science and Technology,Hefei 230026, China
  • 收稿日期:2005-10-17 修回日期:2005-12-04 出版日期:2006-08-20 发布日期:2006-08-20
  • 基金资助:
    Project supported by the Anhui Key Laboratory of Green Material Chemistry (Grant No KLSF(I)02).

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   

  1. 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
  • Received:2005-10-17 Revised:2005-12-04 Online:2006-08-20 Published:2006-08-20
  • Supported by:
    Project supported by the Anhui Key Laboratory of Green Material Chemistry (Grant No KLSF(I)02).

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摘要： 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.

关键词: teleportation, two-qubit state, single-photon two-qubit, linear optical elements

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.

Key words: teleportation, two-qubit state, single-photon two-qubit, linear optical elements

中图分类号:  (Quantum computation architectures and implementations)

  • 03.67.Lx
03.67.Hk (Quantum communication) 03.65.Ta (Foundations of quantum mechanics; measurement theory) 03.65.Ud (Entanglement and quantum nonlocality) 42.50.-p (Quantum optics)