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Assisted concentration of Gaussian resources (2020)
Journal Article
Lami, L., Takagi, R., & Adesso, G. (2020). Assisted concentration of Gaussian resources. Physical Review A, 101(5),

In spite of their outstanding experimental relevance, Gaussian operations in continuous-variable quantum systems are subjected to fundamental limitations, as it is known that general resources cannot be distilled within the Gaussian paradigm. We show... Read More about Assisted concentration of Gaussian resources.

Extendibility of bosonic Gaussian states (2019)
Journal Article
Lami, L., Khatri, S., Adesso, G., & M. Wilde, M. (2019). Extendibility of bosonic Gaussian states. Physical Review Letters, 123(5), Article 050501. https://doi.org/10.1103/PhysRevLett.123.050501

Extendibility of bosonic Gaussian states is a key issue in continuous-variable quantum information. We show that a bosonic Gaussian state is k-extendible if and only if it has a Gaussian k-extension, and we derive a simple semidefinite program, whose... Read More about Extendibility of bosonic Gaussian states.

Indistinguishability-enabled coherence for quantum metrology (2019)
Journal Article
Castellini, A., Lo Franco, R., Lami, L., Winter, A., Adesso, G., & Compagno, G. (2019). Indistinguishability-enabled coherence for quantum metrology. Physical Review A, 100(1), Article 012308. https://doi.org/10.1103/physreva.100.012308

Quantum coherence plays a fundamental and operational role in different areas of physics. A resource theory has been developed to characterize the coherence of distinguishable particles systems. Here we show that indistinguishability of identical par... Read More about Indistinguishability-enabled coherence for quantum metrology.

Generic bound coherence under strictly incoherent operations (2019)
Journal Article
Lami, L., Regula, B., & Adesso, G. (2019). Generic bound coherence under strictly incoherent operations. Physical Review Letters, 122(15), Article 150402. https://doi.org/10.1103/physrevlett.122.150402

We compute analytically the maximal rates of distillation of quantum coherence under strictly incoherent operations (SIO) and physically incoherent operations (PIO), showing that they coincide for all states, and providing a complete description of t... Read More about Generic bound coherence under strictly incoherent operations.

Assisted work distillation (2019)
Journal Article
Morris, B., Lami, L., & Adesso, G. (2019). Assisted work distillation. Physical Review Letters, 122(13), Article 130601. https://doi.org/10.1103/physrevlett.122.130601

We study the process of assisted work distillation. This scenario arises when two parties share a bipartite quantum state ρAB and their task is to locally distill the optimal amount of work when one party is restricted to thermal operations, whereas... Read More about Assisted work distillation.

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), Article 012321. https://doi.org/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 about Optimal distillation of quantum coherence with reduced waste of resources.

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.

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.

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.

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), https://doi.org/10.1109/TIT.2017.2737546

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 about From log-determinant inequalities to Gaussian entanglement via recoverability theory.

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.