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Multipartite Einstein-Podolsky-Rosen steering sharing with separable states (2019)
Journal Article
Xiang, Y., Su, X., Mišta, L., Adesso, G., & He, Q. (2019). Multipartite Einstein-Podolsky-Rosen steering sharing with separable states. Physical Review A, 99(1), doi:10.1103/physreva.99.010104

The distribution of quantum correlations among remote users is a key procedure underlying many quantum information technologies. Einstein-Podolsky-Rosen steering, which is one kind of such a correlation stronger than entanglement, has been identified... Read More

Optimal distillation of quantum coherence with reduced waste of resources (2019)
Journal Article
Torun, G., Lami, L., Adesso, G., & Yildiz, A. (2019). Optimal distillation of quantum coherence with reduced waste of resources. Physical Review A, 99(1), doi:10.1103/physreva.99.012321

We present an optimal probabilistic protocol to distill quantum coherence. Inspired by a specific entanglement distillation protocol, our main result yields a strictly incoherent operation that produces one of a family of maximally coherent states of... Read More

State exchange with quantum side information (2019)
Journal Article
Lee, Y., Takagi, R., Yamasaki, H., Adesso, G., & Lee, S. (2019). State exchange with quantum side information. Physical Review Letters, 122(1), doi:10.1103/physrevlett.122.010502

We consider a quantum communication task between two users Alice and Bob, in which Alice and Bob exchange their respective quantum information by means of local operations and classical communication assisted by shared entanglement. Here, we assume t... Read More

Generic emergence of objectivity of observables in infi nite dimensions (2018)
Journal Article
Knott, P. A., Tufarelli, T., Piani, M., & Adesso, G. (2018). Generic emergence of objectivity of observables in infi nite dimensions. Physical Review Letters, 121(16), doi:10.1103/PhysRevLett.121.160401. ISSN 0031-9007

Quantum Darwinism posits that information becomes objective whenever multiple observers indirectly probe a quantum system by each measuring a fraction of the environment. It was recently shown that objectivity of observables emerges generically from... Read More

Certification and quantification of multilevel quantum coherence (2018)
Journal Article
Ringbauer, M., Bromley, T. R., Cianciaruso, M., Lami, L., Lau, W. S., Adesso, G., …Piani, M. (2018). Certification and quantification of multilevel quantum coherence. Physical Review X, 8(4), doi:10.1103/physrevx.8.041007

Quantum coherence, present whenever a quantum system exists in a superposition of multiple classically distinct states, marks one of the fundamental departures from classical physics. Quantum coherence has recently been investigated rigorously within... Read More

Quantum-enhanced measurements without entanglement (2018)
Journal Article
Braun, D., Adesso, G., Benatti, F., Floreanini, R., Marzolino, U., Mitchell, M. W., & Pirandola, S. (2018). Quantum-enhanced measurements without entanglement. Reviews of Modern Physics, 90(3), doi:10.1103/revmodphys.90.035006. ISSN 0034-6861

Quantum-enhanced measurements exploit quantum mechanical effects for increasing the sensitivity of measurements of certain physical parameters and have great potential for both fundamental science and concrete applications. Most of the research has s... Read More

Probabilistic distillation of quantum coherence (2018)
Journal Article
Fang, K., Wang, X., Lami, L., Regula, B., & Adesso, G. (2018). Probabilistic distillation of quantum coherence. Physical Review Letters, 121(7), doi:10.1103/physrevlett.121.070404. ISSN 0031-9007

The ability to distill quantum coherence is pivotal for optimizing the performance of quantum technologies; however, such a task cannot always be accomplished with certainty. Here we develop a general framework of probabilistic distillation of quantu... Read More

Noisy frequency estimation with noisy probes (2018)
Journal Article
Górecka, A., Pollock, F. A., Liuzzo-Scorpo, P., Nichols, R., Adesso, G., & Modi, K. (2018). Noisy frequency estimation with noisy probes. New Journal of Physics, 20(8), doi:10.1088/1367-2630/aad4e5

We consider frequency estimation in a noisy environment with noisy probes. This builds on previous studies, most of which assume that the initial probe state is pure, while the encoding process is noisy, or that the initial probe state is mixed, whil... Read More

Accessible bounds for general quantum resources (2018)
Journal Article
Bromley, T. R., Cianciaruso, M., Vourekas, S., Regula, B., & Adesso, G. (2018). Accessible bounds for general quantum resources. Journal of Physics A: Mathematical and Theoretical, 51(32), doi:10.1088/1751-8121/aacb4a. ISSN 1751-8113

The recent development of general quantum resource theories has given a sound basis for the quantification of useful quantum effects. Nevertheless, the evaluation of a resource measure can be highly non-trivial, involving an optimisation that is ofte... Read More

Energy-efficient quantum frequency estimation (2018)
Journal Article
Liuzzo-Scorpo, P., Correa, L., Pollock, F. A., Gorecka, A., Modi, K., & Adesso, G. (2018). Energy-efficient quantum frequency estimation. New Journal of Physics, 20, doi:10.1088/1367-2630/aac5b6. ISSN 1367-2630

The problem of estimating the frequency of a two-level atom in a noisy environment is studied. Our interest is to minimise both the energetic cost of the protocol and the statistical uncertainty of the estimate. In particular, we prepare a probe in a... Read More

Quantum coherence fluctuation relations (2018)
Journal Article
Morris, B., & Adesso, G. (2018). Quantum coherence fluctuation relations. Journal of Physics A: Mathematical and Theoretical, 51, doi:10.1088/1751-8121/aac115. ISSN 1751-8113

We investigate manipulations of pure quantum states under incoherent or strictly incoherent operations assisted by a coherence battery, that is, a storage device whose degree of coherence is allowed to fluctuate in the process. This leads to the deri... Read More

Converting multilevel nonclassicality into genuine multipartite entanglement (2018)
Journal Article
Regula, B., Piani, M., Cianciaruso, M., Bromley, T. R., Streltsov, A., & Adesso, G. (2018). Converting multilevel nonclassicality into genuine multipartite entanglement. New Journal of Physics, 20, doi:10.1088/1367-2630/aaae9d. ISSN 1367-2630

Characterizing genuine quantum resources and determining operational rules for their manipulation are crucial steps to appraise possibilities and limitations of quantum technologies. Two such key resources are nonclassicality, manifested as quantum s... Read More

Testing the validity of the ‘local’ and ‘global’ GKLS master equations on an exactly solvable model (2017)
Journal Article
González, J. O., Correa, L. A., Nocerino, G., Palao, J. P., Alonso, D., & Adesso, G. (2017). Testing the validity of the ‘local’ and ‘global’ GKLS master equations on an exactly solvable model. Open Systems and Information Dynamics, 24(4), doi:10.1142/S1230161217400108. ISSN 1230-1612

When deriving a master equation for a multipartite weakly-interacting open quantum systems, dissipation is often addressed locally on each component, i.e. ignoring the coherent couplings, which are later added ‘by hand’. Although simple, the resultin... Read More

Colloquium: quantum coherence as a resource (2017)
Journal Article
Streltsov, A., Adesso, G., & Plenio, M. B. (2017). Colloquium: quantum coherence as a resource. Reviews of Modern Physics, 89, doi:10.1103/RevModPhys.89.041003. ISSN 0034-6861

The coherent superposition of states, in combination with the quantization of observables, represents one of the most fundamental features that mark the departure of quantum mechanics from the classical realm. Quantum coherence in many-body systems e... Read More

Investigating Einstein-Podolsky-Rosen steering of continuous-variable bipartite states by non-Gaussian pseudospin measurements (2017)
Journal Article
Xiang, Y., Xu, B., Mišta, L., Tufarelli, T., He, Q., & Adesso, G. (2017). Investigating Einstein-Podolsky-Rosen steering of continuous-variable bipartite states by non-Gaussian pseudospin measurements. Physical Review A, 96(4), doi:10.1103/PhysRevA.96.042326. ISSN 2469-9926

Einstein-Podolsky-Rosen (EPR) steering is an asymmetric form of correlations which is intermediate between quantum entanglement and Bell nonlocality, and can be exploited as a resource for quantum communication with one untrusted party. In particular... Read More

Optimal continuous variable quantum teleportation with limited resources (2017)
Journal Article
Liuzzo-Scorpo, P., Mari, A., Giovannetti, V., & Adesso, G. (2017). Optimal continuous variable quantum teleportation with limited resources. Physical Review Letters, 119(12), doi:10.1103/PhysRevLett.119.120503. ISSN 0031-9007

Given a certain amount of entanglement available as a resource, what is the most efficient way to accomplish a quantum task? We address this question in the relevant case of continuous variable quantum teleportation protocols implemented using two-mo... Read More

From log-determinant inequalities to Gaussian entanglement via recoverability theory (2017)
Journal Article
Lami, L., Hirche, C., Adesso, G., & Winter, A. (in press). From log-determinant inequalities to Gaussian entanglement via recoverability theory. IEEE Transactions on Information Theory, 63(11), doi:10.1109/TIT.2017.2737546. ISSN 0018-9448

Many determinantal inequalities for positive definite block matrices are consequences of general entropy inequalities, specialised to Gaussian distributed vectors with prescribed covariances. In particular, strong subadditivity (SSA) yields ln det VA... Read More