225 citations · 1.2k across the 34 of their papers we have counts for
6 papers · 1 filter
Cloning Quantum Channels
Pavel Sekatski, Yelena Guryanova, Naga Bhavya Teja Kothakonda +1
We consider the problem of deterministically cloning quantum channels with respect to the best attainable rate and the highest quality, so-called optimal cloning. We demonstrate th…
Quantum sensing of a quantum field
Ricard Ravell Rodríguez, Martí Perarnau-Llobet, Pavel Sekatski
Estimating a classical parameter encoded in the Hamiltonian of a quantum probe is a fundamental and well-understood task in quantum metrology. A textbook example is the estimation…
The entropic coherence is a necessary resource for non-energy preserving gates
Riccardo Castellano, Vasco Cavina, Marti Perarnau-Llobet +2
We consider the task of implementing non-energy preserving gates (NEPG) on a finite-dimensional system S via an energy-preserving interaction with an external battery B. We prove t…
On the entropy growth of sums of iid discrete random variables
Riccardo Castellano, Pavel Sekatski
We derive an asymptotic lower bound on the Shannon entropy of sums of arbitrary iid discrete random variables. The derived bound …
An information-theoretic proof of the Planckian bound for thermalization
Paolo Abiuso, Alberto Rolandi, John Calsamiglia +2
We demonstrate that quantum mechanics entails a fundamental lower bound on the thermalization time of any system. At finite temperature, we show that is bounded by half the…
Exact requirements for battery-assisted qubit gates
Riccardo Castellano, Vasco Cavina, Martí Perarnau-Llobet +2
We consider the implementation of a unitary gate on a qubit system S via a global energy-preserving operation acting on S and an auxiliary system B that can be seen as a battery. W…