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Schur complement inequalities for covariance matrices and monogamy of quantum correlations (2016)
Journal Article
Lami, L., Hirche, C., Adesso, G., & Winter, A. (2016). Schur complement inequalities for covariance matrices and monogamy of quantum correlations. Physical Review Letters, 117, Article 220502. https://doi.org/10.1103/PhysRevLett.117.220502

We derive fundamental constraints for the Schur complement of positive matrices, which provide an operator strengthening to recently established information inequalities for quantum covariance matrices, including strong subadditivity. This allows us... Read More about Schur complement inequalities for covariance matrices and monogamy of quantum correlations.

Measures and applications of quantum correlations (2016)
Journal Article
Adesso, G., Bromley, T. R., & Cianciaruso, M. (2016). Measures and applications of quantum correlations. Journal of Physics A: Mathematical and Theoretical, 49(47), https://doi.org/10.1088/1751-8113/49/47/473001

Quantum information theory is built upon the realisation that quantum resources like coherence and entanglement can be exploited for novel or enhanced ways of transmitting and manipulating information, such as quantum cryptography, teleportation, and... Read More about Measures and applications of quantum correlations.

Accessible quantification of multiparticle entanglement (2016)
Journal Article
Cianciaruso, M., Bromley, T. R., & Adesso, G. (2016). Accessible quantification of multiparticle entanglement. npj Quantum Information, 2(1), Article 16030. https://doi.org/10.1038/npjqi.2016.30

Entanglement is a key ingredient for quantum technologies and a fundamental signature of quantumness in a broad range of phenomena encompassing many-body physics, thermodynamics, cosmology and life sciences. For arbitrary multiparticle systems, entan... Read More about Accessible quantification of multiparticle entanglement.

Observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator (2016)
Journal Article
Silva, I. A., Souza, A. M., Bromley, T. R., Cianciaruso, M., Marx, R., Sarthour, R. S., …Adesso, G. (2016). Observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator. Physical Review Letters, 117(16), https://doi.org/10.1103/PhysRevLett.117.160402

The ability to live in coherent superpositions is a signature trait of quantum systems and constitutes an irreplaceable resource for quantum-enhanced technologies. However, decoherence effects usually destroy quantum superpositions. It has been recen... Read More about Observation of time-invariant coherence in a nuclear magnetic resonance quantum simulator.

Practical quantum metrology in noisy environments (2016)
Journal Article
Nichols, R., Bromley, T. R., Correa, L. A., & Adesso, G. (2016). Practical quantum metrology in noisy environments. Physical Review A, 94(4), Article 042101. https://doi.org/10.1103/PhysRevA.94.042101

The problem of estimating an unknown phase ? using two-level probes in the presence of unital phase-covariant noise and using finite resources is investigated. We introduce a simple model in which the phase-imprinting operation on the probes is reali... Read More about Practical quantum metrology in noisy environments.

Geometric approach to entanglement quantification with polynomial measures (2016)
Journal Article
Regula, B., & Adesso, G. (2016). Geometric approach to entanglement quantification with polynomial measures. Physical Review A, 94(2), Article 022324. https://doi.org/10.1103/PhysRevA.94.022324

We show that the quantification of entanglement of any rank-2 state with any polynomial entanglement measure can be recast as a geometric problem on the corresponding Bloch sphere. This approach provides insight into the properties of entanglement an... Read More about Geometric approach to entanglement quantification with polynomial measures.

Should entanglement measures be monogamous or faithful? (2016)
Journal Article
Lancien, C., Di Martino, S., Huber, M., Piani, M., Adesso, G., & Winter, A. (2016). Should entanglement measures be monogamous or faithful?. Physical Review Letters, 117, Article 060501. https://doi.org/10.1103/PhysRevLett.117.060501

“Is entanglement monogamous?” asks the title of a popular article [B. Terhal, IBM J. Res. Dev. 48, 71 (2004)], celebrating C. H. Bennett’s legacy on quantum information theory. While the answer is affirmative in the qualitative sense, the situation i... Read More about Should entanglement measures be monogamous or faithful?.

Strong subadditivity for log-determinant of covariance matrices and its applications (2016)
Journal Article
Adesso, G., & Simon, R. (2016). Strong subadditivity for log-determinant of covariance matrices and its applications. Journal of Physics A: Mathematical and Theoretical, 49(34), Article 34LT02. https://doi.org/10.1088/1751-8113/49/34/34LT02

We prove that the log-determinant of the covariance matrix obeys the strong subadditivity inequality for arbitrary tripartite states of multimode continuous variable quantum systems. This establishes general limitations on the distribution of informa... Read More about Strong subadditivity for log-determinant of covariance matrices and its applications.

Generalized geometric quantum speed limits (2016)
Journal Article
Pires, D. P., Cianciaruso, M., Céleri, L. C., Adesso, G., & Soares-Pinto, D. O. (2016). Generalized geometric quantum speed limits. Physical Review X, 6(2), Article 21031. https://doi.org/10.1103/PhysRevX.6.021031

The attempt to gain a theoretical understanding of the concept of time in quantum mechanics has triggered significant progress towards the search for faster and more efficient quantum technologies. One of such advances consists in the interpretation... Read More about Generalized geometric quantum speed limits.