Entanglement of indistinguishable particles in condensed-matter physics

Dowling, M. R., Doherty, A. C. and Wiseman, H. M. (2006) Entanglement of indistinguishable particles in condensed-matter physics. Physical Review A, 73 5: 052323-1-052323-12. doi:10.1103/PhysRevA.73.052323

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Author Dowling, M. R.
Doherty, A. C.
Wiseman, H. M.
Title Entanglement of indistinguishable particles in condensed-matter physics
Journal name Physical Review A   Check publisher's open access policy
ISSN 1050-2947
Publication date 2006
Sub-type Article (original research)
DOI 10.1103/PhysRevA.73.052323
Open Access Status File (Publisher version)
Volume 73
Issue 5
Start page 052323-1
End page 052323-12
Total pages 12
Place of publication College Pk
Publisher American Physical Society
Language eng
Subject 0204 Condensed Matter Physics
0205 Optical Physics
020201 Atomic and Molecular Physics
Abstract The concept of entanglement in systems where the particles are indistinguishable has been the subject of much recent interest and controversy. In this paper we study the notion of entanglement of particles introduced by Wiseman and Vaccaro [Phys. Rev. Lett. 91, 097902 (2003)] in several specific physical systems, including some that occur in condensed-matter physics. The entanglement of particles is relevant when the identical particles are itinerant and so not distinguished by their position as in spin models. We show that entanglement of particles can behave differently than other approaches that have been used previously, such as entanglement of modes (occupation-number entanglement) and the entanglement in the two-spin reduced density matrix. We argue that the entanglement of particles is what could actually be measured in most experimental scenarios and thus its physical significance is clear. This suggests that entanglement of particles may be useful in connecting theoretical and experimental studies of entanglement in condensed-matter systems.
Keyword Optics
Physics, Atomic, Molecular & Chemical
Single-photon
Nonlocality
State
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Physical Sciences Publications
 
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Created: Mon, 13 Aug 2007, 16:16:06 EST