Jump to content United States-English
HP.com Home Products and Services Support and Drivers Solutions How to Buy
» Contact HP

hp.com home

Technical Reports

printable version

HP Labs

» Research
» News and events
» Technical reports
» About HP Labs
» Careers @ HP Labs
» People
» Worldwide sites
» Downloads
Content starts here

  Click here for full text: Postscript PDF

Typical Entanglement in Multi-qubit Systems

Kendon, Vivien M.; Nemoto, Kae; Munro, William J.


Keyword(s): characterisation of entanglement; quantum information

Abstract: Please Note. This abstract contains mathematical formulae which cannot be represented here. Quantum entanglement and its paradoxical properties hold the key to an information processing revolution. Much attention has focused recently on the challenging problem of characterizing entanglement. Entanglement for a two qubit system is reasonably well understood, however, the nature and properties of multiple qubit systems are largely unexplored. We have found that typical pure states of N qubits are highly entangled but have decreasing amounts of pairwise entanglement as N increases. Above 6 qubits very few states have any pairwise entanglement, and generally, m-way entanglement disappears from a typical pure state of N qubits for N 2m + 3. Notes: Vivien M. Kendon, Optics Section, Blackett Laboratory, Imperial College, London SW7 2BW, U.K. Kae Nemoto, School of Informatics, Dean Street, University of Wales, Bangor, LL57 1UT, U.K.

5 Pages

Back to Index

»Technical Reports

» 2009
» 2008
» 2007
» 2006
» 2005
» 2004
» 2003
» 2002
» 2001
» 2000
» 1990 - 1999

Heritage Technical Reports

» Compaq & DEC Technical Reports
» Tandem Technical Reports
Privacy statement Using this site means you accept its terms Feedback to HP Labs
© 2009 Hewlett-Packard Development Company, L.P.