期刊
PHYSICAL REVIEW A
卷 93, 期 3, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevA.93.032335
关键词
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资金
- MEC
- MCTI
- CAPES
- CNPq
- FAPs
- Spanish Project Grant - FEDER funds [FIS2014-59311-P]
- DGAPA, UNAM (Mexico) through project PAPIIT [IA101816]
- CNPq (Brazil) [401512/2014-2]
We study the problem of detecting multipartite entanglement among indistinguishable fermionic particles. A multipartite concurrence for pure states of N identical fermions, each one having a d-dimensional single-particle Hilbert space, is introduced. Such an entanglement measure, in particular, is optimized for maximally entangled states of three identical fermions that play a role analogous to the usual (qubit) Greenberger-Horne-Zeilinger state. In addition, it is shown that the fermionic multipartite concurrence can be expressed as the mean value of an observable, provided two copies of the composite state are available.
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