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Tradeoff between extractable mechanical work, accessible entanglement, and ability to act as a reference system, under arbitrary superselection rules

Authors :
Fabio Anselmi
Kurt Jacobs
Howard M. Wiseman
John A. Vaccaro
Source :
Physical Review A. 77
Publication Year :
2008
Publisher :
American Physical Society (APS), 2008.

Abstract

Superselection rules (SSRs) limit the mechanical and quantum processing resources represented by quantum states. However, SSRs can be violated using reference systems to break the underlying symmetry. We show that there is a duality between the ability of a system to do mechanical work and to act as a reference system. Further, for a bipartite system in a globally symmetric pure state, we find a triality between the system's ability to do local mechanical work, its ability to do ``logical work'' due to its accessible entanglement, and its ability to act as a shared reference system.

Details

ISSN :
10941622 and 10502947
Volume :
77
Database :
OpenAIRE
Journal :
Physical Review A
Accession number :
edsair.doi...........032a7e59522dc323116ce4de4a68c901
Full Text :
https://doi.org/10.1103/physreva.77.032114