Remote preparation of a Greenberger-Home-Zeilinger state via a two-particle entangled state

• 来源期刊: 中国物理（英文版）
• 关键词: remote state preparation two-particle entangled state Greenberger-Horne-Zeilinger (GHZ) state controlled-not operation cavity quantum electrodynamics (QED)
• 年，卷（期）: 2007,（5）
• 页码范围: 1209-1214
• 页数: 6页
• 语种: 英文

摘要

We present two schemes for realizing the remote preparation of a Greenberger- Home- Zeilinger (GHZ) state. The first scheme is to remotely prepare a general N-particle GHZ state with two steps. One is to prepare a qubit state by using finite classical bits from sender to receiver via a two-particle entangled state, and the other is that the receiver introduces N - 1 additional particles and performs N - 1 controlled-not (C-Not) operations. The second scheme is to remotely prepare an JV-atom GHZ state via a two-atom entangled state in cavity quantum electrodynamics (QED). The two schemes require only a two-particle entangled state used as a quantum channel, so we reduce the requirement for entanglement.