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Generic emergence of objectivity of observables in infinite dimensions (2018)
Journal Article
Knott, P. A., Tufarelli, T., Piani, M., & Adesso, G. (2018). Generic emergence of objectivity of observables in infinite dimensions. Physical Review Letters, 121(16), https://doi.org/10.1103/PhysRevLett.121.160401

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 about Generic emergence of objectivity of observables in infinite dimensions.

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), Article 041007. https://doi.org/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 about Certification and quantification of multilevel quantum coherence.

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), Article 035006. https://doi.org/10.1103/revmodphys.90.035006

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 about Quantum-enhanced measurements without entanglement.

Gaussian quantum resource theories (2018)
Journal Article
Lami, L., Regula, B., Wang, X., Nichols, R., Winter, A., & Adesso, G. (2018). Gaussian quantum resource theories. Physical Review A, 98(2), https://doi.org/10.1103/physreva.98.022335

We develop a general framework to assess capabilities and limitations of the Gaussian toolbox in continuous-variable quantum information theory. Our framework allows us to characterize the structure and properties of quantum resource theories special... Read More about Gaussian quantum resource theories.

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 about Probabilistic distillation of quantum coherence.

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), Article 083008. https://doi.org/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 about Noisy frequency estimation with noisy probes.

One-Shot Coherence Distillation (2018)
Journal Article
Regula, B., Fang, K., Wang, X., & Adesso, G. (2018). One-Shot Coherence Distillation. Physical Review Letters, 121(1), https://doi.org/10.1103/PhysRevLett.121.010401

We characterize the distillation of quantum coherence in the one-shot setting, that is, the conversion of general quantum states into maximally coherent states under different classes of quantum operations. We show that the maximally incoherent opera... Read More about One-Shot Coherence Distillation.

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), https://doi.org/10.1088/1751-8121/aacb4a

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 about Accessible bounds for general quantum resources.

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, Article 063009. https://doi.org/10.1088/1367-2630/aac5b6

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 about Energy-efficient quantum frequency estimation.

Quantum coherence fluctuation relations (2018)
Journal Article
Morris, B., & Adesso, G. (2018). Quantum coherence fluctuation relations. Journal of Physics A: Mathematical and Theoretical, 51, Article 414007. https://doi.org/10.1088/1751-8121/aac115

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 about Quantum coherence fluctuation relations.

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, Article 033012. https://doi.org/10.1088/1367-2630/aaae9d

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 about Converting multilevel nonclassicality into genuine multipartite entanglement.

Gaussian entanglement revisited (2018)
Journal Article
Lami, L., Serafini, A., & Adesso, G. (in press). Gaussian entanglement revisited. New Journal of Physics, 20, Article 023030. https://doi.org/10.1088/1367-2630/aaa654

We present a novel approach to the problem of separability versus entanglement in Gaussian quantum states of bosonic continuous variable systems, as well as a collection of closely related results. We derive a simplified necessary and sufficient sepa... Read More about Gaussian entanglement revisited.