A Simple Scheme to Entangle Distant Qubits from a Mixed State via an Entanglement Mediator(Condensed Matter and Statistical Physics)
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概要
- 論文の詳細を見る
A simple scheme to prepare an entanglement between two separated qubits from a given mixed state is proposed. A single qubit (entanglement mediator) is repeatedly made to interact locally and consecutively with the two qubits through rotating-wave couplings and is then measured. It is shown that we need to repeat this kind of process only three times to establish a maximally entangled state directly from an arbitrary initial mixed state, with no need to prepare the state of the qubits in advance or to rearrange the setup step by step. Furthermore, the maximum yield realizable with this scheme is compatible with the maximum entanglement, provided that the coupling constants are properly tuned.
- 理論物理学刊行会の論文
- 2005-09-25
著者
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NAKAZATO Hiromichi
Department of Physics, Waseda University
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Nakazato Hiromichi
Department Of Physics University Of The Ryukyus
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Yuasa Kazuya
Department of Physics, Waseda University
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Yuasa Kazuya
Department Of Physics Waseda University
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