All Outputs (103)

Unconditional security of entanglement-based continuous-variable quantum secret sharing (2017)
Journal Article
Kogias, I., Xiang, Y., He, Q., & Adesso, G. (2017). Unconditional security of entanglement-based continuous-variable quantum secret sharing. Physical Review A, 95(1), https://doi.org/10.1103/PhysRevA.95.012315

The need for secrecy and security is essential in communication. Secret sharing is a conventional protocol to distribute a secret message to a group of parties, who cannot access it individually but need to cooperate in order to decode it. While seve... Read More about Unconditional security of entanglement-based continuous-variable quantum secret sharing.

Multipartite Gaussian steering: monogamy constraints and quantum cryptography applications (2017)
Journal Article
Xiang, Y., Kogias, I., Adesso, G., & He, Q. (2017). Multipartite Gaussian steering: monogamy constraints and quantum cryptography applications. Physical Review A, 95, Article 010101(R). https://doi.org/10.1103/PhysRevA.95.010101

We derive laws for the distribution of quantum steering among different parties in multipartite Gaussian states under Gaussian measurements. We prove that a monogamy relation akin to the generalized Coffman-Kundu-Wootters inequality holds quantitativ... Read More about Multipartite Gaussian steering: monogamy constraints and quantum cryptography applications.

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.

Let researchers try new paths (2016)
Journal Article
Oni, T., Sciarrino, F., Adesso, G., & Knight, R. (2016). Let researchers try new paths. Nature, 538(7626), https://doi.org/10.1038/538451a

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 ϕ 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.

Strong monogamy inequalities for four qubits (2016)
Journal Article
Regula, B., Osterloh, A., & Adesso, G. (2016). Strong monogamy inequalities for four qubits. Physical Review A, 93(5), Article 052338. https://doi.org/10.1103/PhysRevA.93.052338

We investigate possible generalizations of the Coffman-Kundu-Wootters monogamy inequality to four qubits, accounting for multipartite entanglement in addition to the bipartite terms. We show that the most natural extension of the inequality does not... Read More about Strong monogamy inequalities for four qubits.

Robustness of Coherence: An Operational and Observable Measure of Quantum Coherence (2016)
Journal Article
Napoli, C., Bromley, T. R., Cianciaruso, M., Piani, M., Johnston, N., & Adesso, G. (2016). Robustness of Coherence: An Operational and Observable Measure of Quantum Coherence. Physical Review Letters, 116(15), Article 150502. https://doi.org/10.1103/PhysRevLett.116.150502

Quantifying coherence is an essential endeavour for both quantum foundations and quantum technologies. Here the robustness of coherence is defined and proven a full monotone in the context of the recently introduced resource theories of quantum coher... Read More about Robustness of Coherence: An Operational and Observable Measure of Quantum Coherence.

Robustness of asymmetry and coherence of quantum states (2016)
Journal Article
Piani, M., Cianciaruso, M., Bromley, T. R., Napoli, C., Johnston, N., & Adesso, G. (2016). Robustness of asymmetry and coherence of quantum states. Physical Review A, 93(4), Article 042107. https://doi.org/10.1103/PhysRevA.93.042107

Quantum states may exhibit asymmetry with respect to the action of a given group. Such an asymmetry of states can be considered as a resource in applications such as quantum metrology, and it is a concept that encompasses quantum coherence as a speci... Read More about Robustness of asymmetry and coherence of quantum states.

Entanglement quantification made easy: polynomial measures invariant under convex decomposition (2016)
Journal Article
Regula, B., & Adesso, G. (2016). Entanglement quantification made easy: polynomial measures invariant under convex decomposition. Physical Review Letters, 116, Article 070504. https://doi.org/10.1103/PhysRevLett.116.070504

Quantifying entanglement in composite systems is a fundamental challenge, yet exact results are only available in few special cases. This is because hard optimization problems are routinely involved, such as finding the convex decomposition of a mixe... Read More about Entanglement quantification made easy: polynomial measures invariant under convex decomposition.

Assisted distillation of quantum coherence (2016)
Journal Article
Chitambar, E., Streltsov, A., Rana, S., Bera, M. N., Adesso, G., & Lewenstein, M. (2016). Assisted distillation of quantum coherence. Physical Review Letters, 116(7), https://doi.org/10.1103/PhysRevLett.116.070402

We introduce and study the task of assisted coherence distillation. This task arises naturally in bipartite systems where both parties work together to generate the maximal possible coherence on one of the subsystems. Only incoherent operations are a... Read More about Assisted distillation of quantum coherence.

Efficiency of inefficient endoreversible thermal machines (2016)
Journal Article
Palao, J. P., Correa, L. A., Adesso, G., & Alonso, D. (2016). Efficiency of inefficient endoreversible thermal machines. Brazilian Journal of Physics, 46(3), 282-287. https://doi.org/10.1007/s13538-015-0396-x

We present a study of the performance of endoreversible thermal machines optimized with respect to the thermodynamic force associated with the cold bath in the regime of small thermodynamic forces. These thermal machines can work either as an engine... Read More about Efficiency of inefficient endoreversible thermal machines.

Gaussian interferometric power as a measure of continuous-variable non-Markovianity (2015)
Journal Article
Souza, L. A., Dhar, H. S., Bera, M. N., Liuzzo-Scorpo, P., & Adesso, G. (2015). Gaussian interferometric power as a measure of continuous-variable non-Markovianity. Physical Review A, 92(5), https://doi.org/10.1103/physreva.92.052122

We investigate the non-Markovianity of continuous-variable Gaussian quantum channels through the evolution of an operational metrological quantifier, namely, the Gaussian interferometric power, which captures the minimal precision that can be achieve... Read More about Gaussian interferometric power as a measure of continuous-variable non-Markovianity.

Hierarchy of steering criteria based on moments for all bipartite quantum systems (2015)
Journal Article
Kogias, I., Skrzypczyk, P., Cavalcanti, D., Acín, A., & Adesso, G. (2015). Hierarchy of steering criteria based on moments for all bipartite quantum systems. Physical Review Letters, 115(21), https://doi.org/10.1103/PhysRevLett.115.210401

Einstein-Podolsky-Rosen steering is a manifestation of quantum correlations exhibited by quantum systems that allows for entanglement certification when one of the subsystems is not characterized. Detecting the steerability of quantum states is essen... Read More about Hierarchy of steering criteria based on moments for all bipartite quantum systems.