Comparison of quantum channels by superchannels
G Gour - IEEE Transactions on Information Theory, 2019 - ieeexplore.ieee.org
We extend the definition of the conditional min-entropy from bipartite quantum states to
bipartite quantum channels. We show that many of the properties of the conditional min …
bipartite quantum channels. We show that many of the properties of the conditional min …
Fundamental limitations on distillation of quantum channel resources
Quantum channels underlie the dynamics of quantum systems, but in many practical settings
it is the channels themselves that require processing. We establish universal limitations on …
it is the channels themselves that require processing. We establish universal limitations on …
Resource theory of asymmetric distinguishability for quantum channels
This paper develops the resource theory of asymmetric distinguishability for quantum
channels, generalizing the related resource theory for states [Matsumoto, arXiv: 1010.1030 …
channels, generalizing the related resource theory for states [Matsumoto, arXiv: 1010.1030 …
Dynamical entanglement
G Gour, CM Scandolo - Physical Review Letters, 2020 - APS
Unlike the entanglement of quantum states, very little is known about the entanglement of
bipartite channels, called dynamical entanglement. Here we work with the partial transpose …
bipartite channels, called dynamical entanglement. Here we work with the partial transpose …
Quantum metrology in the finite-sample regime
In quantum metrology, one of the major applications of quantum technologies, the ultimate
precision of estimating an unknown parameter is often stated in terms of the Cram\'er-Rao …
precision of estimating an unknown parameter is often stated in terms of the Cram\'er-Rao …
Dynamical resource theory of quantum coherence
Decoherence is all around us. Every quantum system that interacts with the environment is
doomed to decohere. While preserving quantum coherence is a major challenge faced in …
doomed to decohere. While preserving quantum coherence is a major challenge faced in …
Entanglement of a bipartite channel
G Gour, CM Scandolo - Physical Review A, 2021 - APS
The most general quantum object that can be shared between two distant parties is a
bipartite channel, as it is the basic element to construct all quantum circuits. In general …
bipartite channel, as it is the basic element to construct all quantum circuits. In general …
Application of the resource theory of channels to communication scenarios
We introduce a resource theory of channels relevant to communication via quantum
channels, in which the set of constant channels—useless channels for communication tasks …
channels, in which the set of constant channels—useless channels for communication tasks …