Observable estimation of entanglement of formation and quantum discord for bipartite mixed quantum states
Journal Article
·
· Physical Review. A
- Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, 117543 (Singapore)
We present observable lower and upper bounds for the entanglement of formation (EOF) and quantum discord (QD), which facilitates estimates of EOF and QD for arbitrary experimental unknown states in finite-dimensional bipartite systems. These bounds can be easily obtained by a few experimental measurements on a twofold copy {rho} x {rho} of the mixed states. Based on our results, we use the experimental measurement data of the real experiment given by Schmid et al.[Phys. Rev. Lett. 101, 260505 (2008)] to obtain the lower and upper bounds of EOF and QD for the experimental unknown state.
- OSTI ID:
- 22093459
- Journal Information:
- Physical Review. A, Journal Name: Physical Review. A Journal Issue: 5 Vol. 84; ISSN 1050-2947; ISSN PLRAAN
- Country of Publication:
- United States
- Language:
- English
Similar Records
Comparison of the attempts of quantum discord and quantum entanglement to capture quantum correlations
Conservation law for distributed entanglement of formation and quantum discord
Decomposition of bipartite states with applications to quantum no-broadcasting theorems
Journal Article
·
Tue Mar 15 00:00:00 EDT 2011
· Physical Review. A
·
OSTI ID:21537374
Conservation law for distributed entanglement of formation and quantum discord
Journal Article
·
Fri Jul 15 00:00:00 EDT 2011
· Physical Review. A
·
OSTI ID:22038619
Decomposition of bipartite states with applications to quantum no-broadcasting theorems
Journal Article
·
Thu Jul 15 00:00:00 EDT 2010
· Physical Review. A
·
OSTI ID:21442901