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Multipartite entanglement and frustration
被引:30
|作者:
Facchi, P.
[1
,2
]
Florio, G.
[2
,3
]
Marzolino, U.
[4
,5
]
Parisi, G.
[6
,7
]
Pascazio, S.
[2
,3
]
机构:
[1] Univ Bari, Dipartimento Matemat, I-70125 Bari, Italy
[2] Ist Nazl Fis Nucl, Sez Bari, I-70126 Bari, Italy
[3] Univ Bari, Dipartmento Fis, I-70126 Bari, Italy
[4] Univ Trieste, Dipartimento Fis, I-34014 Trieste, Italy
[5] Ist Nazl Fis Nucl, Sez Trieste, I-34014 Trieste, Italy
[6] Univ Roma La Sapienza, Dipartimento Fis, Ctr Stat Mech & Complex, CNR,INFM, I-00185 Rome, Italy
[7] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy
来源:
关键词:
PROBABILITY RELATIONS;
QUANTUM;
ENTROPY;
D O I:
10.1088/1367-2630/12/2/025015
中图分类号:
O4 [物理学];
学科分类号:
0702 ;
摘要:
Some features of the global entanglement of a composed quantum system can be quantified in terms of the purity of a balanced bipartition, made up of half of its subsystems. For the given bipartition, purity can always be minimized by taking a suitable (pure) state. When many bipartitions are considered, the requirement that purity be minimal for all bipartitions can engender conflicts and frustration will arise. This unearths an interesting link between frustration and multipartite entanglement, defined as the average purity over all (balanced) bipartitions.
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页数:14
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