Perfect quantum teleportation and dense coding protocols via the 2N-qubit W state |
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| Authors: | Wang Mei-Yu and Yan Feng-Li |
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| Institution: | College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China;Hebei Advanced Thin Films Laboratory, Shijiazhuang 050016, China;College of Physics Science and Information Engineering, Hebei Normal University, Shijiazhuang 050016, China;Hebei Advanced Thin Films Laboratory, Shijiazhuang 050016, China |
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| Abstract: | In this paper, we investigate perfect quantum teleportation and dense coding by using an 2N-qubit W state channel. In the quantum teleportation scheme, an unknown N-qubit entangled state can be perfectly teleported. One ebit of entanglement and two bits of classical communication are consumed in the teleportation process, just like when using the Bell state channel. While N+1 bits of classical information can be transmitted by only sending N particles in the dense coding protocol. |
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| Keywords: | quantum teleportation quantum dense coding W state |
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