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arXiv · 1503.05321

Entanglement of Multi-qudit States Constructed by Linearly Independent Coherent States: Balanced Case

G. Najarbashi·S. Mirzaei
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Abstract

Multi-mode entangled coherent states are important resources for linear optics quantum computation and teleportation. Here we introduce the generalized balanced N-mode coherent states which recast in the multi-qudit case. The necessary and sufficient condition for bi-separability of such balanced N-mode coherent states is found. We particularly focus on pure and mixed multi-qubit and multi-qutrit like states and examine the degree of bipartite as well as tripartite entanglement using the concurrence measure. Unlike the N-qubit case, it is shown that there are qutrit states violating monogamy inequality. Using parity, displacement operator and beam splitters, we will propose a scheme for generating balanced N-mode entangled coherent states for even number of terms in superposition.

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G. Najarbashi, S. Mirzaei. 2015-03-18. Entanglement of Multi-qudit States Constructed by Linearly Independent Coherent States: Balanced Case. https://doi.org/10.1007/s10773-015-2775-z

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