Ludovico Lami

Certification and Quantification of Multilevel Quantum Coherence

2018 · Physical Review X

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 a resource-theoretic …

Bosonic Quantum Communication Across Arbitrarily High Loss Channels

2020 · Physical Review Letters

A general attenuator ${\mathrm{\ensuremath{\Phi}}}_{\ensuremath{\lambda},\ensuremath{\sigma}}$ is a bosonic quantum channel that acts by combining the input with a fixed environment state $\ensuremath{\sigma}$ in a beam splitter of transmissivity $\ensuremath{\lambda}$. If $\ensuremath{\sigma}$ is a thermal state, the …

Thermometry of Gaussian quantum systems using Gaussian measurements

2022 · Quantum

We study the problem of estimating the temperature of Gaussian systems with feasible measurements, namely Gaussian and photo-detection-like measurements. For Gaussian measurements, we develop a general method to identify the optimal measurement numerically, and derive …

Reversibility of quantum resources through probabilistic protocols

2023 · arXiv (Cornell University)

Among the most fundamental questions in the manipulation of quantum resources such as entanglement is the possibility of reversibly transforming all resource states. The key consequence of this would be the identification of a unique …