A realizable multi-bit dense coding scheme with an Einstein-Podolsky-Rosen channel

• 作 者: 郭奇 程留永 王洪福 张寿 Yeon Kyu-Hwang
• 机 构: Department of Physics,College of Science,Yanbian University,Yanji 133002,China,Center for the Conden
• 出 处: Chinese Physics B
• 发表日期: 2012年10期
• 关键词: dense Einstein deterministic assistant prepare entanglement entangled circuits n

We propose a multi-bit dense coding scheme by using only an Einstein-Podolsky-Rosen(EPR) channel and assistant qubits.It is shown that no matter how many classical bits there are,the quantum channel is always a Bell state.The present dense coding process can also prepare non-local multi-particle Greenberger-Horne-Zeilinger(GHZ) states at one of the participants.The quantum circuits for this dense coding process are constructed,the deterministic implementation method in an optical system based on the cross-Kerr nonlinearities is shown.

We propose a multi-bit dense coding scheme by using only an Einstein-Podolsky-Rosen (EPR) channel and assistant qubits. It is no indication that no matter how many classical bits there are, the quantum channel is always a Bell state. Present dense coding process can also prepare non-local multi-particle Greenberger-Horne-Zeilinger (GHZ) states at one of the participants. The quantum circuits for this dense coding process are constructed, the deterministic implementation method in an optical system based on the cross -Kerr nonlinearities is shown.