47 citations · 171 across the 11 of their papers we have counts for
9 papers · 1 filter
Universal framework for simultaneous tomography of quantum states and SPAM noise
Abhijith Jayakumar, Stefano Chessa, Carleton Coffrin +3
We present a general denoising algorithm for performing simultaneous tomography of quantum states and measurement noise. This algorithm allows us to fully characterize state prepar…
Quantum work extraction efficiency for noisy quantum batteries: the role of coherence
Salvatore Tirone, Raffaele Salvia, Stefano Chessa +1
Quantum work capacitances and maximal asymptotic work/energy ratios are figures of merit characterizing the robustness against noise of work extraction processes in quantum batteri…
Work extraction processes from noisy quantum batteries: the role of non local resources
Salvatore Tirone, Raffaele Salvia, Stefano Chessa +1
We demonstrate an asymmetry between the beneficial effects one can obtain using non-local operations and non-local states to mitigate the detrimental effects of environmental noise…
Quantum Work Capacitances: ultimate limits for energy extraction on noisy quantum batteries
Salvatore Tirone, Raffaele Salvia, Stefano Chessa +1
We present a theoretical analysis of the energy recovery efficiency for quantum batteries composed of many identical quantum cells undergoing noise. While the possibility of using…
Resonant Multilevel Amplitude Damping Channels
Stefano Chessa, Vittorio Giovannetti
We introduce a new set of quantum channels: resonant multilevel amplitude damping (ReMAD) channels. Among other instances, they can describe energy dissipation effects in multileve…
Partially Coherent Direct Sum Channels
Stefano Chessa, Vittorio Giovannetti
We introduce Partially Coherent Direct Sum (PCDS) quantum channels, as a generalization of the already known Direct Sum quantum channels. We derive necessary and sufficient conditi…
Quantum capacity analysis of multi-level amplitude damping channels
Stefano Chessa, Vittorio Giovannetti
The set of Multi-level Amplitude Damping (MAD) quantum channels is introduced as a generalization of the standard qubit Amplitude Damping Channel to quantum systems of finite dimen…
Quantum-capacity bounds in spin-network communication channels
Stefano Chessa, Marco Fanizza, Vittorio Giovannetti
Using the Lieb-Robinson inequality and the continuity property of the quantum capacities in terms of the diamond norm, we derive an upper bound on the values that these capacities…
Time-Polynomial Lieb-Robinson bounds for finite-range spin-network models
Stefano Chessa, Vittorio Giovannetti
The Lieb-Robinson bound sets a theoretical upper limit on the speed at which information can propagate in non-relativistic quantum spin networks. In its original version, it result…