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Natural multiparticle entanglement in a Fermi gas.

Abstract:

We investigate multipartite entanglement in a noninteracting fermion gas, as a function of fermion separation, starting from the many particle fermion density matrix. We prove that all multiparticle entanglement can be built only out of two-fermion entanglement. Although from the Pauli exclusion principle we would always expect entanglement to decrease with fermion distance, we surprisingly find the opposite effect for certain fermion configurations. The von Neumann entropy is found to be pro...

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Publication status:
Published

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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
Journal:
Physical Review Letters
Volume:
95
Issue:
3
Pages:
030503
Publication date:
2005-07-01
DOI:
EISSN:
1079-7114
ISSN:
0031-9007
Source identifiers:
155671
Language:
English
Pubs id:
pubs:155671
UUID:
uuid:ad3c00f5-1d86-4fa3-93cd-f0275b241538
Local pid:
pubs:155671
Deposit date:
2012-12-19

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