Entanglement and correlation for identical particles in quantum computing

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• 作者：Fang ; Angbo ; Chang ; Y.C.
• 关键词：03.65.Ud ; 03.67.Lx ; 03.67.Mn ; Entanglement and quantum nonlocality ; Quantum computation ; Quantum entanglement production ; Characterization ; Manipulation
• 刊名：Physics Letters A
• 出版年：2003
• 出版时间：May 26, 2003
• 年：2003
• 卷：311
• 期：6
• 页码：443-458
• 全文大小：227 K

文摘

We clarify the relationship and physical implications of different measures of entanglement and quantum particle correlation in a system containing indistinguishable particles. We also propose a subspace-restricted (due to superselection rules and/or space–time boundary conditions) entanglement measure and show that this measure is suitable to be used for describing the entanglement between qubits in quantum computer (QC) architectures involving identical particles.