2013
DOI: 10.1007/s11434-012-5604-2
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Entanglement of linear cluster states in terms of averaged entropies

Abstract: An entanglement measure, multiple entropy measures (MEMS) was proposed recently by using the geometric mean of partial entropies over all possible i-body combinations of the quantum system. In this work, we study the average subsystem von Neumann entropies of the linear cluster state and investigated the quantum entanglement of linear cluster states in terms of MEMS. Explicit results with specific particle numbers are calculated, and some analytical results are given for systems with arbitrary particle numbers… Show more

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Cited by 25 publications
(7 citation statements)
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“…Furthermore, the proposed system can be designed to realize universal quantum logic gate [34] which could be applied in quantum computers [35,36]. Moreover, the solid qubits entangled system could be used to study the characterization the entanglement [37][38][39]. Also recent process on entanglement concentration using QDs and cavity coupled system [40,41] has been proposed; the proposed protocol is based on the input-output relation of single photon in single QD and cavity coupled system.…”
Section: Discussionmentioning
confidence: 99%
“…Furthermore, the proposed system can be designed to realize universal quantum logic gate [34] which could be applied in quantum computers [35,36]. Moreover, the solid qubits entangled system could be used to study the characterization the entanglement [37][38][39]. Also recent process on entanglement concentration using QDs and cavity coupled system [40,41] has been proposed; the proposed protocol is based on the input-output relation of single photon in single QD and cavity coupled system.…”
Section: Discussionmentioning
confidence: 99%
“…Now, let us study the entanglement property of the MPS, the key quantity of quantum information theory [12][13][14][15], in detail. About measures of entanglement there are many kinds of methods, such as the quantification characteristic function of quantum nonlocality [16], Bell inequality [17,18], quantum discord [19], averaged entropy [20] and so on. Considering our system, we shall adopt the von Neumann entropy which [21][22][23][24][25][26][27][28] according to bipartition parameterization by the adjacent spin number n of a B n spin block is,…”
Section: The Entanglement Propertymentioning
confidence: 99%
“…Now, let us study the entanglement property of the MPS, the key quantity of quantum information theory [14][15][16][17], in detail. There are many kinds of methods to measure entanglement, such as the quantification characteristic function of quantum nonlocality [18], Bell inequality [19,20], quantum discord [21], averaged entropy [22] and so on. For our system, we shall adopt the von Neumann entropy which [23][24][25][26][27][28][29][30] according to the bipartition parameterization by the adjacent spin number n of a B n spin block is,…”
Section: The Entanglement Propertymentioning
confidence: 99%