a College of Physics and Information Science, Hunan Normal University, Changsha 410081, China; b School of Physics Science and Technology, Central South University, Changsha 410081, China
Abstract An effective teleportation scheme for an unknown ionic internal state via trapped ions is proposed without joint Bell-state measurement (BSM). In the constructed quantum channel process, we make use of entanglement swapping to avoid decrease in entanglement during the distributing of particles. Thus our scheme provides new prospects for quantum teleportation in a longer distance. The distinct advantage of our scheme is insensitive to the heating of vibrational mode. Furthermore, our scheme has no any individual optical access, and the successful probability also can reach 1.
Received: 03 November 2005
Revised: 17 November 2005
Accepted manuscript online:
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