Characterizing the entanglement of symmetric many-particle spin-1/2 systems

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dc.creatorStockton, John K.
dc.creatorGeremia, JM
dc.creatorDoherty, Andrew C.
dc.creatorMabuchi, Hideo
dc.date2002-10-15
dc.date2003-05-12
dc.date.accessioned2026-07-07T06:05:15Z
dc.date.available2026-07-07T06:05:15Z
dc.descriptionAnalyzing the properties of entanglement in many-particle spin-1/2 systems is generally difficult because the system's Hilbert space grows exponentially with the number of constituent particles, $N$. Fortunately, it is still possible to investigate many-particle entanglement when the state of the system possesses sufficient symmetry. In this paper, we present a practical method for efficiently computing various bipartite entanglement measures for states in the symmetric subspace and perform these calculations for $N\sim 10^3$. By considering all possible bipartite splits, we construct a picture of the multiscale entanglement in large symmetric systems. In particular, we characterize dynamically generated spin-squeezed states by comparing them to known reference states (e.g., GHZ and Dicke states) and new families of states with near-maximal bipartite entropy. We quantify the trade-off between the degree of entanglement and its robustness to particle loss, emphasizing that substantial entanglement need not be fragile.
dc.descriptionUpdated version reflects changes made in January 2003
dc.identifierhttps://arxiv.org/abs/quant-ph/0210117
dc.identifierhttp://arxiv.org/abs/quant-ph/0210117
dc.identifierPhys. Rev. A 67, 022112 (2003)
dc.identifierdoi:10.1103/PhysRevA.67.022112
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/90577
dc.subjectQuantum Physics
dc.titleCharacterizing the entanglement of symmetric many-particle spin-1/2 systems
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