Entanglement Constrained by Superselection Rules.

Loading...
Thumbnail Image
File version
Author(s)
Bartlett, SD
Wiseman, HM
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
2003
Size

101670 bytes

File type(s)

application/pdf

Location
License
Abstract

Bipartite entanglement may be reduced if there are restrictions on allowed local operations. We introduce the concept of a generalized superselection rule to describe such restrictions, and quantify the entanglement constrained by it. We show that ensemble quantum information processing, where elements in the ensemble are not individually addressable, is subject to the superselection rule associated with the symmetric group (the group of permutations of elements). We prove that even for an ensemble comprising many pairs of qubits, each pair described by a pure Bell state, the entanglement per element constrained by this superselection rule goes to zero for a large number of elements.

Journal Title

Physical Review Letters

Conference Title
Book Title
Edition
Volume

91

Issue

9

Thesis Type
Degree Program
School
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement

© 2003 American Physical Society. This is the author-manuscript version of this paper. Reproduced in accordance with the copyright policy of the publisher. Please refer to the journal's website for access to the definitive, published version.

Item Access Status
Note
Access the data
Related item(s)
Subject

Mathematical sciences

Physical sciences

Engineering

Persistent link to this record
Citation
Collections