The DOI matches its Crossref record; 26 of the 26 references it cites were found in a registry or an index.
Gaussian Quantum Discord
Open accessAbstract
We extend the quantum discord to continuous variable systems and evaluate Gaussian quantum discord C(ϱ) for bipartite Gaussian states. In particular, for squeezed-thermal states, we explicitly maximize the extractable information over Gaussian measurements: C(ϱ) is minimized by a generalized measurement rather than a projective one. Almost all squeezed-thermal states have nonzero Gaussian discord: They may be either separable or entangled if the discord is below the threshold C(ϱ) = 1, whereas they are all entangled above the threshold. We elucidate the general role of state parameters in determining the discord and discuss its evolution in noisy channels.
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Cites
Quantum states with Einstein-Podolsky-Rosen correlations admitting a hidden-variable model
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Quantum Discord: A Measure of the Quantumness of Correlations
Ollivier, H., & Zurek, W. H. (2001) · Physical Review Letters · doi:10.1103/physrevlett.88.017901 · Cited by 3,616
Unconditional Quantum Teleportation
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Classical, quantum and total correlations
Henderson, L., & Vedral, V (2001) · Journal of Physics A: Mathematical and General · doi:10.1088/0305-4470/34/35/315 · Cited by 2,367
Quantum Discord and the Power of One Qubit
Datta, A., Shaji, A., & Caves, C. M. (2008) · Physical Review Letters · doi:10.1103/physrevlett.100.050502 · Cited by 1,258
Quantum discord for two-qubit systems
Luo, S. (2008) · Physical Review A · doi:10.1103/physreva.77.042303 · Cited by 1,060
Experimental Quantum Computing without Entanglement
Lanyon, B. P., Barbieri, M., Almeida, M. P., & White, A. G. (2008) · Physical Review Letters · doi:10.1103/physrevlett.101.200501 · Cited by 874
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Characterization of Gaussian operations and distillation of Gaussian states
Giedke, G., & Ignacio Cirac, J. (2002) · Physical Review A · doi:10.1103/physreva.66.032316 · Cited by 569
Classical correlation and quantum discord in critical systems
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Cited by
The classical-quantum boundary for correlations: Discord and related measures
Modi, K., Brodutch, A., Cable, H., Paterek, T., & Vedral, V. (2012) · Reviews of Modern Physics · doi:10.1103/revmodphys.84.1655 · Cited by 1,600
Continuous Variable Quantum Information: Gaussian States and Beyond
Adesso, G., Ragy, S., & Lee, A. R. (2014) · Open Systems & Information Dynamics · doi:10.1142/s1230161214400010 · Cited by 787
Quantum discord of two-qubitXstates
Chen, Q., Zhang, C., Yu, S., Yi, X. X., & Oh, C. H. (2011) · Physical Review A · doi:10.1103/physreva.84.042313 · Cited by 300
Behavior of Quantum Correlations under Local Noise
Streltsov, A., Kampermann, H., & Bruß, D. (2011) · Physical Review Letters · doi:10.1103/physrevlett.107.170502 · Cited by 189
Experimental investigation of the non-Markovian dynamics of classical and quantum correlations
Xu, J.-S., Li, C.-F., Zhang, C.-J., Xu, X.-Y., Zhang, Y.-S., & Guo, G.-C. (2010) · Physical Review A · doi:10.1103/physreva.82.042328 · Cited by 74
Metadata
- Authors
- Giorda, P., & Paris, M. G. A.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2010-07-07
- Volume
- 105
- Issue
- 2
- Pages
- 020503-020503
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W2076254988
- Cited by
- 490
- References
- 26
- FWCI
- 61.90
- Type
- journal article
- Language
- en
- Open access
- green
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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