177 citations · 713 across the 27 of their papers we have counts for
30 papers
Classical Capacity of Single-Mode Bosonic Gaussian Channels
Gerardo Adesso, Ludovico Lami, Vittorio Giovannetti
The classical capacity of a noisy optical channel is the maximum rate at which information can be transmitted reliably, given a constraint on the mean input energy. For the ubiquit…
Universal Entanglement Distillation
Salvatore Tirone, Francesco Anna Mele, Vittorio Giovannetti +1
We present a universal entanglement distillation protocol that asymptotically achieves the distillable entanglement of any unknown bipartite state in a fixed finite dimension. That…
Technical analysis of the Resource-efficient Quantum Walkers Quantum Random Access Memory
Giuseppe De Riso, Giuseppe Catalano, Seth Lloyd +2
Quantum Random Access Memory (qRAM) is a critical component for achieving quantum advantage in algorithms ranging from database search to quantum machine learning. In a recently in…
Bosonic quantum communication beyond the thermal threshold
Francesco Anna Mele, Giuseppe Catalano, Marco Fanizza +2
The quantum capacity of the bosonic thermal attenuator, which is given by the regularization of its coherent information, is unknown. The seminal work of Holevo and Werner establis…
A resource-efficient quantum-walker Quantum RAM
Giuseppe De Riso, Giuseppe Catalano, Seth Lloyd +2
Efficient and coherent data retrieval and storage are essential for harnessing quantum algorithms' speedup. Such a fundamental task is addressed by a quantum Random Access Memory (…
Statistical Characterization of Entanglement Degradation Under Markovian Noise in Composite Quantum Systems
Nunzia Cerrato, Sauro Succi, Giacomo De Palma +1
Understanding how noise degrades entanglement is crucial for the development of reliable quantum technologies. While the Markovian approximation simplifies the analysis of noise, i…
A quantum algorithm for estimating the determinant
Vittorio Giovannetti, Seth Lloyd, Lorenzo Maccone
We present a quantum algorithm for estimating the matrix determinant based on quantum spectral sampling. The algorithm estimates the logarithm of the determinant of an …
Extracting energy via bosonic Gaussian operations
Frank Ernesto Quintela Rodriguez, Francesco Anna Mele, Salvatore Francesco Emanuele Oliviero +3
Quantum thermodynamics is often formulated as a theory with constrained access to operations and resources. In this manuscript, we find a closed formula for the Gaussian ergotropy,…
Non-asymptotic quantum communication on lossy transmission lines with memory
Francesco Anna Mele, Giovanni Barbarino, Vittorio Giovannetti +1
Non-asymptotic quantum Shannon theory analyses how to transmit quantum information across a quantum channel as efficiently as possible within a specified error tolerance, given acc…
Achievable rates in non-asymptotic bosonic quantum communication
Francesco Anna Mele, Giovanni Barbarino, Vittorio Giovannetti +1
Bosonic quantum communication has extensively been analysed in the asymptotic setting, assuming infinite channel uses and vanishing communication errors. Comparatively fewer detail…
Controlling Sloppiness in Two-Phase Estimation with a Tunable Weak Measurement
Gabriele Bizzarri, Miranda Parisi, Mylenne Manrique +6
The description of complex systems requires a progressively larger number of parameters. However, in practice, it often happens that a small subset of parameters suffices to descri…
Learning quantum states of continuous variable systems
Francesco Anna Mele, Antonio Anna Mele, Lennart Bittel +5
Quantum state tomography, aimed at deriving a classical description of an unknown state from measurement data, is a fundamental task in quantum physics. In this work, we analyse th…
Entanglement Degradation in the Presence of Markovian Noise: a Statistical Analysis
Nunzia Cerrato, Giacomo De Palma, Vittorio Giovannetti
Adopting a statistical approach we study the degradation of entanglement of a quantum system under the action of an ensemble of randomly distributed Markovian noise. This enables u…
Quantum communication on the bosonic loss-dephasing channel
Francesco Anna Mele, Farzin Salek, Vittorio Giovannetti +1
Quantum optical systems are typically affected by two types of noise: photon loss and dephasing. Despite extensive research on each noise process individually, a comprehensive unde…
Optical fibres with memory effects and their quantum communication capacities
Francesco Anna Mele, Giacomo De Palma, Marco Fanizza +2
The development of quantum repeaters poses significant challenges in terms of cost and maintenance, prompting the exploration of alternative approaches for achieving long-distance…
Recovering complete positivity of non-Markovian quantum dynamics with Choi-proximity regularization
Antonio D'Abbruzzo, Donato Farina, Vittorio Giovannetti
A relevant problem in the theory of open quantum systems is the lack of complete positivity of dynamical maps obtained after weak-coupling approximations, a famous example being th…
Beyond the swap test: optimal estimation of quantum state overlap
Marco Fanizza, Matteo Rosati, Michalis Skotiniotis +2
We study the estimation of the overlap between two unknown pure quantum states of a finite dimensional system, given and copies of each type. This is a fundamental primitiv…
Generating quantum discord between two distant Bose-Einstein condensates with Bell-like detection
M. Eghbali-Arani, H. Yavari, M. A. Shahzamanian +2
We propose a technique that enables the creation of quantum discord between two distant nodes, each containing a cavity consist of the Bose-Einstein condensate, by applying a non-i…
The time as an emergent property of quantum mechanics, a synthetic description of a first experimental approach
E Moreva, G Brida, M Gramegna +3
The "problem of time" in present physics substantially consists in the fact that a straightforward quantization of the general relativistic evolution equation and constraints gener…
Quantum parameter estimation affected by unitary disturbance
A. De Pasquale, D. Rossini, P. Facchi +1
We provide a general framework for handling the effects of a unitary disturbance on the estimation of the amplitude associated to a unitary dynamics. By computing an analytical…
A quantum non-Markovian collision model: incoherent swap case
Francesco Ciccarello, Vittorio Giovannetti
We have recently presented a collision-model-based framework to approach non-Markovian quantum dynamics [Ciccarello F Palma G M and Giovannetti V 2013 Phys. Rev. A 87, 040103(R)].…
Collision-model-based approach to non-Markovian quantum dynamics
F. Ciccarello, G. M. Palma, V. Giovannetti
We present a theoretical framework to tackle quantum non-Markovian dynamics based on a microscopic collision model (CM), where the bath consists of a large collection of initially…
Master equation for cascade quantum channels: a collisional approach
V. Giovannetti, G. M. Palma
It has been recently shown that collisional models can be used to derive a general form for the master equations which describe the reduced time evolution of a composite multiparti…
Entanglement-assisted tomography of a quantum target
A. De Pasquale, P. Facchi, V. Giovannetti +1
We study the efficiency of quantum tomographic reconstruction where the system under investigation (quantum target) is indirectly monitored by looking at the state of a quantum pro…